56155720863 has 48 divisors (see below), whose sum is σ = 85628083968. Its totient is φ = 32403571200.

The previous prime is 56155720799. The next prime is 56155720867. The reversal of 56155720863 is 36802755165.

It is not a de Polignac number, because 56155720863 - 2⁶ = 56155720799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56155720867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59930931 + ... + 59931867.

It is an arithmetic number, because the mean of its divisors is an integer number (1783918416).

Almost surely, 2^56155720863 is an apocalyptic number.

56155720863 is a deficient number, since it is larger than the sum of its proper divisors (29472363105).

56155720863 is a wasteful number, since it uses less digits than its factorization.

56155720863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 56155720863 in words is "fifty-six billion, one hundred fifty-five million, seven hundred twenty thousand, eight hundred sixty-three".