138793380628 has 36 divisors (see below), whose sum is σ = 283358053440. Its totient is φ = 59311427952.

The previous prime is 138793380623. The next prime is 138793380631. The reversal of 138793380628 is 826083397831.

It is a super-2 number, since 2×138793380628² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138793380623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 952348 + ... + 1088371.

It is an arithmetic number, because the mean of its divisors is an integer number (7871057040).

Almost surely, 2^138793380628 is an apocalyptic number.

It is an amenable number.

138793380628 is an abundant number, since it is smaller than the sum of its proper divisors (144564672812).

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

138793380628 is a wasteful number, since it uses less digits than its factorization.

138793380628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041084 (or 2041075 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 138793380628 in words is "one hundred thirty-eight billion, seven hundred ninety-three million, three hundred eighty thousand, six hundred twenty-eight".