56066155515 has 24 divisors (see below), whose sum is σ = 97204021200. Its totient is φ = 29894969664.

The previous prime is 56066155511. The next prime is 56066155531. The reversal of 56066155515 is 51555166065.

56066155515 is a `hidden beast` number, since 5 + 60 + 66 + 15 + 5 + 515 = 666.

It is not a de Polignac number, because 56066155515 - 2² = 56066155511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (56066155511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52464 + ... + 338946.

It is an arithmetic number, because the mean of its divisors is an integer number (4050167550).

Almost surely, 2^56066155515 is an apocalyptic number.

56066155515 is a deficient number, since it is larger than the sum of its proper divisors (41137865685).

56066155515 is a wasteful number, since it uses less digits than its factorization.

56066155515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290843 (or 290840 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 56066155515 in words is "fifty-six billion, sixty-six million, one hundred fifty-five thousand, five hundred fifteen".