102071231644 has 6 divisors (see below), whose sum is σ = 178624655384. Its totient is φ = 51035615820.

The previous prime is 102071231629. The next prime is 102071231657. The reversal of 102071231644 is 446132170201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12758903952 + ... + 12758903959.

Almost surely, 2^102071231644 is an apocalyptic number.

It is an amenable number.

102071231644 is a deficient number, since it is larger than the sum of its proper divisors (76553423740).

102071231644 is a wasteful number, since it uses less digits than its factorization.

102071231644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25517807915 (or 25517807913 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 102071231644 in words is "one hundred two billion, seventy-one million, two hundred thirty-one thousand, six hundred forty-four".