138280020604 has 24 divisors (see below), whose sum is σ = 267707293056. Its totient is φ = 61969278000.

The previous prime is 138280020577. The next prime is 138280020611. The reversal of 138280020604 is 406020082831.

It is a self number, because there is not a number n which added to its sum of digits gives 138280020604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22128762 + ... + 22135009.

It is an arithmetic number, because the mean of its divisors is an integer number (11154470544).

Almost surely, 2^138280020604 is an apocalyptic number.

It is an amenable number.

138280020604 is a deficient number, since it is larger than the sum of its proper divisors (129427272452).

138280020604 is a wasteful number, since it uses less digits than its factorization.

138280020604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44263857 (or 44263855 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 138280020604 in words is "one hundred thirty-eight billion, two hundred eighty million, twenty thousand, six hundred four".