138487863212 has 24 divisors (see below), whose sum is σ = 253397760000. Its totient is φ = 66100571856.

The previous prime is 138487863161. The next prime is 138487863253. The reversal of 138487863212 is 212368784831.

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 7 ways as a sum of consecutive naturals, for example, 1462412 + ... + 1554227.

It is an arithmetic number, because the mean of its divisors is an integer number (10558240000).

Almost surely, 2^138487863212 is an apocalyptic number.

It is an amenable number.

138487863212 is a deficient number, since it is larger than the sum of its proper divisors (114909896788).

138487863212 is a wasteful number, since it uses less digits than its factorization.

138487863212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017165 (or 3017163 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The spelling of 138487863212 in words is "one hundred thirty-eight billion, four hundred eighty-seven million, eight hundred sixty-three thousand, two hundred twelve".