138902652780 has 48 divisors (see below), whose sum is σ = 398413469664. Its totient is φ = 36137274880.

The previous prime is 138902652769. The next prime is 138902652817. The reversal of 138902652780 is 87256209831.

138902652780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28229787 + ... + 28234706.

It is an arithmetic number, because the mean of its divisors is an integer number (8300280618).

Almost surely, 2^138902652780 is an apocalyptic number.

138902652780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138902652780 is an abundant number, since it is smaller than the sum of its proper divisors (259510816884).

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

138902652780 is a wasteful number, since it uses less digits than its factorization.

138902652780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56464546 (or 56464544 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 138902652780 in words is "one hundred thirty-eight billion, nine hundred two million, six hundred fifty-two thousand, seven hundred eighty".