139968867634 has 16 divisors (see below), whose sum is σ = 224801292600. Its totient is φ = 65127614464.

The previous prime is 139968867629. The next prime is 139968867683. The reversal of 139968867634 is 436768869931.

It can be written as a sum of positive squares in 4 ways, for example, as 136976230609 + 2992637025 = 370103^2 + 54705^2 .

It is a super-3 number, since 3×139968867634³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23124679 + ... + 23130730.

Almost surely, 2^139968867634 is an apocalyptic number.

139968867634 is a deficient number, since it is larger than the sum of its proper divisors (84832424966).

139968867634 is a wasteful number, since it uses less digits than its factorization.

139968867634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46255517.

The product of its digits is 282175488, while the sum is 70.

The spelling of 139968867634 in words is "one hundred thirty-nine billion, nine hundred sixty-eight million, eight hundred sixty-seven thousand, six hundred thirty-four".