52155616566 has 16 divisors (see below), whose sum is σ = 104606736624. Its totient is φ = 17335954944.

The previous prime is 52155616549. The next prime is 52155616567. The reversal of 52155616566 is 66561655125.

52155616566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×52155616566² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52155616567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12310351 + ... + 12314586.

It is an arithmetic number, because the mean of its divisors is an integer number (6537921039).

Almost surely, 2^52155616566 is an apocalyptic number.

52155616566 is an abundant number, since it is smaller than the sum of its proper divisors (52451120058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52155616566 is a wasteful number, since it uses less digits than its factorization.

52155616566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24625295.

The product of its digits is 1620000, while the sum is 48.

The spelling of 52155616566 in words is "fifty-two billion, one hundred fifty-five million, six hundred sixteen thousand, five hundred sixty-six".