102163646505931 has 4 divisors (see below), whose sum is σ = 102164144994864. Its totient is φ = 102163148017000.

The previous prime is 102163646505911. The next prime is 102163646505971. The reversal of 102163646505931 is 139505646361201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102163646505931 - 2²¹ = 102163644408779 is a prime.

It is a super-2 number, since 2×102163646505931² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102163646505911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248936920 + ... + 249346981.

It is an arithmetic number, because the mean of its divisors is an integer number (25541036248716).

Almost surely, 2^{102163646505931} is an apocalyptic number.

102163646505931 is a deficient number, since it is larger than the sum of its proper divisors (498488933).

102163646505931 is an equidigital number, since it uses as much as digits as its factorization.

102163646505931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498488932.

The product of its (nonzero) digits is 3499200, while the sum is 52.

The spelling of 102163646505931 in words is "one hundred two trillion, one hundred sixty-three billion, six hundred forty-six million, five hundred five thousand, nine hundred thirty-one".