138956362572 has 18 divisors (see below), whose sum is σ = 324234525748. Its totient is φ = 46318357088.

The previous prime is 138956362487. The next prime is 138956362583. The reversal of 138956362572 is 275263659831.

It is a super-2 number, since 2×138956362572² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1237504 + ... + 1345112.

Almost surely, 2^138956362572 is an apocalyptic number.

138956362572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138956362572 is an abundant number, since it is smaller than the sum of its proper divisors (185278163176).

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

138956362572 is an frugal number, since it uses more digits than its factorization.

138956362572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215225 (or 107614 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 57.

The spelling of 138956362572 in words is "one hundred thirty-eight billion, nine hundred fifty-six million, three hundred sixty-two thousand, five hundred seventy-two".