138124421358 has 64 divisors (see below), whose sum is σ = 351443059200. Its totient is φ = 35876467200.

The previous prime is 138124421299. The next prime is 138124421381. The reversal of 138124421358 is 853124421831.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 3028083 + ... + 3073358.

It is an arithmetic number, because the mean of its divisors is an integer number (5491297800).

Almost surely, 2^138124421358 is an apocalyptic number.

138124421358 is an abundant number, since it is smaller than the sum of its proper divisors (213318637842).

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

138124421358 is a wasteful number, since it uses less digits than its factorization.

138124421358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101478 (or 6101464 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The spelling of 138124421358 in words is "one hundred thirty-eight billion, one hundred twenty-four million, four hundred twenty-one thousand, three hundred fifty-eight".