138570811932 has 48 divisors (see below), whose sum is σ = 388970704640. Its totient is φ = 37507888512.

The previous prime is 138570811889. The next prime is 138570811933. The reversal of 138570811932 is 239118075831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138570811933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43410313 + ... + 43413504.

Almost surely, 2^138570811932 is an apocalyptic number.

138570811932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138570811932 is an abundant number, since it is smaller than the sum of its proper divisors (250399892708).

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

138570811932 is a wasteful number, since it uses less digits than its factorization.

138570811932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86823850 (or 86823848 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 138570811932 in words is "one hundred thirty-eight billion, five hundred seventy million, eight hundred eleven thousand, nine hundred thirty-two".