56056620361421 has 16 divisors (see below), whose sum is σ = 57576843118080. Its totient is φ = 54550402072320.

The previous prime is 56056620361411. The next prime is 56056620361477. The reversal of 56056620361421 is 12416302665065.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56056620361421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56056620361411) 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, 12493061 + ... + 16376501.

It is an arithmetic number, because the mean of its divisors is an integer number (3598552694880).

Almost surely, 2^{56056620361421} is an apocalyptic number.

It is an amenable number.

56056620361421 is a deficient number, since it is larger than the sum of its proper divisors (1520222756659).

56056620361421 is a wasteful number, since it uses less digits than its factorization.

56056620361421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885244.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 56056620361421 in words is "fifty-six trillion, fifty-six billion, six hundred twenty million, three hundred sixty-one thousand, four hundred twenty-one".