138278825370 has 96 divisors (see below), whose sum is σ = 424140088320. Its totient is φ = 30587016960.

The previous prime is 138278825369. The next prime is 138278825413. The reversal of 138278825370 is 73528872831.

138278825370 is a `hidden beast` number, since 1 + 3 + 8 + 27 + 8 + 82 + 537 + 0 = 666.

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 47 ways as a sum of consecutive naturals, for example, 3520635 + ... + 3559694.

It is an arithmetic number, because the mean of its divisors is an integer number (4418125920).

Almost surely, 2^138278825370 is an apocalyptic number.

138278825370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138278825370 is an abundant number, since it is smaller than the sum of its proper divisors (285861262950).

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

138278825370 is a wasteful number, since it uses less digits than its factorization.

138278825370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080380 (or 7080377 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 138278825370 in words is "one hundred thirty-eight billion, two hundred seventy-eight million, eight hundred twenty-five thousand, three hundred seventy".