138654399696 has 160 divisors (see below), whose sum is σ = 387629475840. Its totient is φ = 42558607872.

The previous prime is 138654399679. The next prime is 138654399761. The reversal of 138654399696 is 696993456831.

It is a self number, because there is not a number n which added to its sum of digits gives 138654399696.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52065661 + ... + 52068323.

It is an arithmetic number, because the mean of its divisors is an integer number (2422684224).

Almost surely, 2^138654399696 is an apocalyptic number.

138654399696 is a gapful number since it is divisible by the number (16) 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 138654399696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193814737920).

138654399696 is an abundant number, since it is smaller than the sum of its proper divisors (248975076144).

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

138654399696 is a wasteful number, since it uses less digits than its factorization.

138654399696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273 (or 4267 counting only the distinct ones).

The product of its digits is 226748160, while the sum is 69.

The spelling of 138654399696 in words is "one hundred thirty-eight billion, six hundred fifty-four million, three hundred ninety-nine thousand, six hundred ninety-six".