56161601015 has 16 divisors (see below), whose sum is σ = 73600301376. Its totient is φ = 40889049600.

The previous prime is 56161601011. The next prime is 56161601029. The reversal of 56161601015 is 51010616165.

It is not a de Polignac number, because 56161601015 - 2² = 56161601011 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 (56161601011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6080066 + ... + 6089295.

It is an arithmetic number, because the mean of its divisors is an integer number (4600018836).

Almost surely, 2^56161601015 is an apocalyptic number.

56161601015 is a deficient number, since it is larger than the sum of its proper divisors (17438700361).

56161601015 is a wasteful number, since it uses less digits than its factorization.

56161601015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12169450.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 56161601015 in words is "fifty-six billion, one hundred sixty-one million, six hundred one thousand, fifteen".