138572257000 has 64 divisors (see below), whose sum is σ = 325888992000. Its totient is φ = 55150286400.

The previous prime is 138572256989. The next prime is 138572257003. The reversal of 138572257000 is 752275831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (138572257003) 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, 149172 + ... + 547171.

It is an arithmetic number, because the mean of its divisors is an integer number (5092015500).

Almost surely, 2^138572257000 is an apocalyptic number.

138572257000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138572257000 is an abundant number, since it is smaller than the sum of its proper divisors (187316735000).

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

138572257000 is a wasteful number, since it uses less digits than its factorization.

138572257000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696563 (or 696549 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 138572257000 in words is "one hundred thirty-eight billion, five hundred seventy-two million, two hundred fifty-seven thousand".