102566352260021 has 32 divisors (see below), whose sum is σ = 115436107100160. Its totient is φ = 90502199250624.

The previous prime is 102566352260017. The next prime is 102566352260027. The reversal of 102566352260021 is 120062253665201.

It is a cyclic number.

It is not a de Polignac number, because 102566352260021 - 2² = 102566352260017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102566352260027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511251110 + ... + 511451688.

It is an arithmetic number, because the mean of its divisors is an integer number (3607378346880).

Almost surely, 2^{102566352260021} is an apocalyptic number.

It is an amenable number.

102566352260021 is a deficient number, since it is larger than the sum of its proper divisors (12869754840139).

102566352260021 is a wasteful number, since it uses less digits than its factorization.

102566352260021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220145.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 102566352260021 in words is "one hundred two trillion, five hundred sixty-six billion, three hundred fifty-two million, two hundred sixty thousand, twenty-one".