56555737761005 has 16 divisors (see below), whose sum is σ = 81644373310080. Its totient is φ = 36739967988672.

The previous prime is 56555737760971. The next prime is 56555737761059. The reversal of 56555737761005 is 50016773755565.

It is a cyclic number.

It is not a de Polignac number, because 56555737761005 - 2⁸ = 56555737760749 is a prime.

It is a super-2 number, since 2×56555737761005² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42523110434 + ... + 42523111763.

It is an arithmetic number, because the mean of its divisors is an integer number (5102773331880).

Almost surely, 2^{56555737761005} is an apocalyptic number.

It is an amenable number.

56555737761005 is a deficient number, since it is larger than the sum of its proper divisors (25088635549075).

56555737761005 is a wasteful number, since it uses less digits than its factorization.

56555737761005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85046222228.

The product of its (nonzero) digits is 115762500, while the sum is 62.

The spelling of 56555737761005 in words is "fifty-six trillion, five hundred fifty-five billion, seven hundred thirty-seven million, seven hundred sixty-one thousand, five".