Search a number
12998758474881 = 323379494273741
BaseRepresentation
bin1011110100101000001001…
…1000011010010010000001
31201000200001211100111222200
42331022002120122102001
53200432424132144011
643351314110223413
72511062231663544
oct275120230322201
951020054314880
1012998758474881
114161819311583
12155b2b5ab4b69
13733a156b517a
1432d2011a685b
151781da697856
hexbd28261a481

12998758474881 has 12 divisors (see below), whose sum is σ = 18776044415700. Its totient is φ = 8665811313120.

The previous prime is 12998758474817. The next prime is 12998758474901. The reversal of 12998758474881 is 18847485789921.

12998758474881 is a `hidden beast` number, since 1 + 2 + 9 + 9 + 87 + 58 + 4 + 7 + 488 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4697445034881 + 8301313440000 = 2167359^2 + 2881200^2 .

It is not a de Polignac number, because 12998758474881 - 26 = 12998758474817 is a prime.

It is a super-2 number, since 2×129987584748812 (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12998758474881.

It is not an unprimeable number, because it can be changed into a prime (12998758474181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 904671 + ... + 5178411.

It is an arithmetic number, because the mean of its divisors is an integer number (1564670367975).

Almost surely, 212998758474881 is an apocalyptic number.

It is an amenable number.

12998758474881 is a deficient number, since it is larger than the sum of its proper divisors (5777285940819).

12998758474881 is a wasteful number, since it uses less digits than its factorization.

12998758474881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611696 (or 4611693 counting only the distinct ones).

The product of its digits is 2601123840, while the sum is 81.

The spelling of 12998758474881 in words is "twelve trillion, nine hundred ninety-eight billion, seven hundred fifty-eight million, four hundred seventy-four thousand, eight hundred eighty-one".