138475680965 has 16 divisors (see below), whose sum is σ = 175989777600. Its totient is φ = 104306113152.

The previous prime is 138475680929. The next prime is 138475680979. The reversal of 138475680965 is 569086574831.

It is a cyclic number.

It is not a de Polignac number, because 138475680965 - 2¹⁸ = 138475418821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138475680898 and 138475680907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4455800 + ... + 4486769.

It is an arithmetic number, because the mean of its divisors is an integer number (10999361100).

Almost surely, 2^138475680965 is an apocalyptic number.

It is an amenable number.

138475680965 is a deficient number, since it is larger than the sum of its proper divisors (37514096635).

138475680965 is a wasteful number, since it uses less digits than its factorization.

138475680965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8942756.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 138475680965 in words is "one hundred thirty-eight billion, four hundred seventy-five million, six hundred eighty thousand, nine hundred sixty-five".