139717965774 has 64 divisors (see below), whose sum is σ = 310693109760. Its totient is φ = 41705163360.

The previous prime is 139717965757. The next prime is 139717965787. The reversal of 139717965774 is 477569717931.

It is a happy number.

It is a super-2 number, since 2×139717965774² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307752 + ... + 611675.

It is an arithmetic number, because the mean of its divisors is an integer number (4854579840).

Almost surely, 2^139717965774 is an apocalyptic number.

139717965774 is an abundant number, since it is smaller than the sum of its proper divisors (170975143986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139717965774 is a wasteful number, since it uses less digits than its factorization.

139717965774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919525.

The product of its digits is 70013160, while the sum is 66.

The spelling of 139717965774 in words is "one hundred thirty-nine billion, seven hundred seventeen million, nine hundred sixty-five thousand, seven hundred seventy-four".