138615677626766 has 8 divisors (see below), whose sum is σ = 207929017321200. Its totient is φ = 69306005186368.

The previous prime is 138615677626717. The next prime is 138615677626807. The reversal of 138615677626766 is 667626776516831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916719011 + ... + 916870206.

It is an arithmetic number, because the mean of its divisors is an integer number (25991127165150).

Almost surely, 2^{138615677626766} is an apocalyptic number.

138615677626766 is a deficient number, since it is larger than the sum of its proper divisors (69313339694434).

138615677626766 is a wasteful number, since it uses less digits than its factorization.

138615677626766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833627018.

The product of its digits is 3840721920, while the sum is 77.

The spelling of 138615677626766 in words is "one hundred thirty-eight trillion, six hundred fifteen billion, six hundred seventy-seven million, six hundred twenty-six thousand, seven hundred sixty-six".