138645302412 has 24 divisors (see below), whose sum is σ = 327600716800. Its totient is φ = 45630099216.

The previous prime is 138645302371. The next prime is 138645302447. The reversal of 138645302412 is 214203546831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73124212 + ... + 73126107.

Almost surely, 2^138645302412 is an apocalyptic number.

138645302412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138645302412 is an abundant number, since it is smaller than the sum of its proper divisors (188955414388).

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

138645302412 is a wasteful number, since it uses less digits than its factorization.

138645302412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146250405 (or 146250403 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 138645302412 in words is "one hundred thirty-eight billion, six hundred forty-five million, three hundred two thousand, four hundred twelve".