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54155528013 = 318051842671
BaseRepresentation
bin110010011011111010…
…111100011101001101
312011210012011212101210
4302123322330131031
51341402303344023
640513444525033
73625011251526
oct623372743515
9164705155353
1054155528013
1120a70424824
12a5b46b0779
135150977542
14289a5ab84d
15161e5dc593
hexc9bebc74d

54155528013 has 4 divisors (see below), whose sum is σ = 72207370688. Its totient is φ = 36103685340.

The previous prime is 54155527999. The next prime is 54155528039. The reversal of 54155528013 is 31082555145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 54155528013 - 24 = 54155527997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54155538013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9025921333 + ... + 9025921338.

It is an arithmetic number, because the mean of its divisors is an integer number (18051842672).

Almost surely, 254155528013 is an apocalyptic number.

It is an amenable number.

54155528013 is a deficient number, since it is larger than the sum of its proper divisors (18051842675).

54155528013 is a wasteful number, since it uses less digits than its factorization.

54155528013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18051842674.

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 54155528013 in words is "fifty-four billion, one hundred fifty-five million, five hundred twenty-eight thousand, thirteen".

Divisors: 1 3 18051842671 54155528013