139668968583 has 6 divisors (see below), whose sum is σ = 201744065744. Its totient is φ = 93112645716.

The previous prime is 139668968567. The next prime is 139668968587. The reversal of 139668968583 is 385869866931.

139668968583 is a `hidden beast` number, since 1 + 39 + 6 + 6 + 8 + 9 + 6 + 8 + 583 = 666.

It is not a de Polignac number, because 139668968583 - 2⁴ = 139668968567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139668968587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7759387135 + ... + 7759387152.

Almost surely, 2^139668968583 is an apocalyptic number.

139668968583 is a deficient number, since it is larger than the sum of its proper divisors (62075097161).

139668968583 is a wasteful number, since it uses less digits than its factorization.

139668968583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518774293 (or 15518774290 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 72.

The spelling of 139668968583 in words is "one hundred thirty-nine billion, six hundred sixty-eight million, nine hundred sixty-eight thousand, five hundred eighty-three".