Search a number
-
+
79488888497 = 531749785717
BaseRepresentation
bin100101000000111101…
…0000010111010110001
321121011201100220211022
41022001322002322301
52300243123412442
6100303334425225
75512544255414
oct1120172027261
9247151326738
1079488888497
1130790450487
12134a4802215
13765a28c285
143bc0d2db7b
1521036ad3d2
hex1281e82eb1

79488888497 has 8 divisors (see below), whose sum is σ = 80994252456. Its totient is φ = 77983731072.

The previous prime is 79488888487. The next prime is 79488888511.

79488888497 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 31990336 + 79456898161 = 5656^2 + 281881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79488888497 - 222 = 79484694193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79488888407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884483 + ... + 970199.

It is an arithmetic number, because the mean of its divisors is an integer number (10124281557).

Almost surely, 279488888497 is an apocalyptic number.

It is an amenable number.

79488888497 is a deficient number, since it is larger than the sum of its proper divisors (1505363959).

79488888497 is a wasteful number, since it uses less digits than its factorization.

79488888497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103267.

The product of its digits is 2080899072, while the sum is 80.

The spelling of 79488888497 in words is "seventy-nine billion, four hundred eighty-eight million, eight hundred eighty-eight thousand, four hundred ninety-seven".

Divisors: 1 53 17497 85717 927341 4543001 1499790349 79488888497