102632587921 has 4 divisors (see below), whose sum is σ = 102642934500. Its totient is φ = 102622241344.

The previous prime is 102632587877. The next prime is 102632587961. The reversal of 102632587921 is 129785236201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26580737296 + 76051850625 = 163036^2 + 275775^2 .

It is a cyclic number.

It is not a de Polignac number, because 102632587921 - 2¹¹ = 102632585873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102632587961) 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, 5158396 + ... + 5178253.

It is an arithmetic number, because the mean of its divisors is an integer number (25660733625).

Almost surely, 2^102632587921 is an apocalyptic number.

It is an amenable number.

102632587921 is a deficient number, since it is larger than the sum of its proper divisors (10346579).

102632587921 is an equidigital number, since it uses as much as digits as its factorization.

102632587921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10346578.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 102632587921 in words is "one hundred two billion, six hundred thirty-two million, five hundred eighty-seven thousand, nine hundred twenty-one".