56161236620554 has 32 divisors (see below), whose sum is σ = 93866968984320. Its totient is φ = 25022324198592.

The previous prime is 56161236620551. The next prime is 56161236620557. The reversal of 56161236620554 is 45502663216165.

It is an interprime number because it is at equal distance from previous prime (56161236620551) and next prime (56161236620557).

It is not an unprimeable number, because it can be changed into a prime (56161236620551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2337204 + ... + 10852879.

It is an arithmetic number, because the mean of its divisors is an integer number (2933342780760).

Almost surely, 2^{56161236620554} is an apocalyptic number.

56161236620554 is a deficient number, since it is larger than the sum of its proper divisors (37705732363766).

56161236620554 is a wasteful number, since it uses less digits than its factorization.

56161236620554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13195774.

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 56161236620554 in words is "fifty-six trillion, one hundred sixty-one billion, two hundred thirty-six million, six hundred twenty thousand, five hundred fifty-four".