56121154259 has 24 divisors (see below), whose sum is σ = 60482363760. Its totient is φ = 51928860672.

The previous prime is 56121154253. The next prime is 56121154267. The reversal of 56121154259 is 95245112165.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-56121154259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56121154253) 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 23 ways as a sum of consecutive naturals, for example, 12433187 + ... + 12437699.

It is an arithmetic number, because the mean of its divisors is an integer number (2520098490).

Almost surely, 2^56121154259 is an apocalyptic number.

56121154259 is a deficient number, since it is larger than the sum of its proper divisors (4361209501).

56121154259 is a wasteful number, since it uses less digits than its factorization.

56121154259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871 (or 4818 counting only the distinct ones).

The product of its digits is 108000, while the sum is 41.

The spelling of 56121154259 in words is "fifty-six billion, one hundred twenty-one million, one hundred fifty-four thousand, two hundred fifty-nine".