138147974472 has 32 divisors (see below), whose sum is σ = 353793595680. Its totient is φ = 44926170240.

The previous prime is 138147974467. The next prime is 138147974509. The reversal of 138147974472 is 274479741831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70196158 + ... + 70198125.

It is an arithmetic number, because the mean of its divisors is an integer number (11056049865).

Almost surely, 2^138147974472 is an apocalyptic number.

138147974472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138147974472 is an abundant number, since it is smaller than the sum of its proper divisors (215645621208).

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

138147974472 is a wasteful number, since it uses less digits than its factorization.

138147974472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140394333 (or 140394329 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 57.

The spelling of 138147974472 in words is "one hundred thirty-eight billion, one hundred forty-seven million, nine hundred seventy-four thousand, four hundred seventy-two".