138619704252 has 96 divisors (see below), whose sum is σ = 344277606400. Its totient is φ = 43285819392.

The previous prime is 138619704227. The next prime is 138619704281. The reversal of 138619704252 is 252407916831.

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, 36777024 + ... + 36780792.

It is a 1-persistent number, because it is pandigital, but 2⋅138619704252 = 277239408504 is not.

Almost surely, 2^138619704252 is an apocalyptic number.

138619704252 is a gapful number since it is divisible by the number (12) 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 138619704252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172138803200).

138619704252 is an abundant number, since it is smaller than the sum of its proper divisors (205657902148).

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

138619704252 is a wasteful number, since it uses less digits than its factorization.

138619704252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555 (or 5553 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 138619704252 in words is "one hundred thirty-eight billion, six hundred nineteen million, seven hundred four thousand, two hundred fifty-two".