138711465984 has 272 divisors, whose sum is σ = 455313391232. Its totient is φ = 36578525184.

The previous prime is 138711465979. The next prime is 138711466001. The reversal of 138711465984 is 489564117831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17887452 + ... + 17895204.

Almost surely, 2^138711465984 is an apocalyptic number.

138711465984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138711465984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227656695616).

138711465984 is an abundant number, since it is smaller than the sum of its proper divisors (316601925248).

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

138711465984 is an frugal number, since it uses more digits than its factorization.

138711465984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808 (or 7778 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The spelling of 138711465984 in words is "one hundred thirty-eight billion, seven hundred eleven million, four hundred sixty-five thousand, nine hundred eighty-four".