56111957061 has 16 divisors (see below), whose sum is σ = 80587161600. Its totient is φ = 34627293360.

The previous prime is 56111956913. The next prime is 56111957093. The reversal of 56111957061 is 16075911165.

It is not a de Polignac number, because 56111957061 - 2¹¹ = 56111955013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56111967061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13114261 + ... + 13118538.

It is an arithmetic number, because the mean of its divisors is an integer number (5036697600).

Almost surely, 2^56111957061 is an apocalyptic number.

It is an amenable number.

56111957061 is a deficient number, since it is larger than the sum of its proper divisors (24475204539).

56111957061 is a wasteful number, since it uses less digits than its factorization.

56111957061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26232856.

The product of its (nonzero) digits is 56700, while the sum is 42.

The spelling of 56111957061 in words is "fifty-six billion, one hundred eleven million, nine hundred fifty-seven thousand, sixty-one".