138147989479064 has 32 divisors (see below), whose sum is σ = 259538428369200. Its totient is φ = 68937837851520.

The previous prime is 138147989479063. The next prime is 138147989479069. The reversal of 138147989479064 is 460974989741831.

It is a self number, because there is not a number n which added to its sum of digits gives 138147989479064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138147989479063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5527874 + ... + 17517230.

Almost surely, 2^{138147989479064} is an apocalyptic number.

It is an amenable number.

138147989479064 is a deficient number, since it is larger than the sum of its proper divisors (121390438890136).

138147989479064 is a wasteful number, since it uses less digits than its factorization.

138147989479064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11992203 (or 11992199 counting only the distinct ones).

The product of its (nonzero) digits is 2633637888, while the sum is 80.

The spelling of 138147989479064 in words is "one hundred thirty-eight trillion, one hundred forty-seven billion, nine hundred eighty-nine million, four hundred seventy-nine thousand, sixty-four".