56138829513 has 64 divisors (see below), whose sum is σ = 86512188672. Its totient is φ = 32075366400.

The previous prime is 56138829431. The next prime is 56138829517. The reversal of 56138829513 is 31592883165.

It is a happy number.

It is not a de Polignac number, because 56138829513 - 2⁹ = 56138829001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (56138829517) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17004963 + ... + 17008263.

It is an arithmetic number, because the mean of its divisors is an integer number (1351752948).

Almost surely, 2^56138829513 is an apocalyptic number.

It is an amenable number.

56138829513 is a deficient number, since it is larger than the sum of its proper divisors (30373359159).

56138829513 is a wasteful number, since it uses less digits than its factorization.

56138829513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674.

The product of its digits is 1555200, while the sum is 51.

The spelling of 56138829513 in words is "fifty-six billion, one hundred thirty-eight million, eight hundred twenty-nine thousand, five hundred thirteen".