139717993018 has 8 divisors (see below), whose sum is σ = 209579442912. Its totient is φ = 69858178716.

The previous prime is 139717992943. The next prime is 139717993031. The reversal of 139717993018 is 810399717931.

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

It is a super-2 number, since 2×139717993018² (a number of 23 digits) contains 22 as substring.

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, 166630 + ... + 554257.

It is an arithmetic number, because the mean of its divisors is an integer number (26197430364).

Almost surely, 2^139717993018 is an apocalyptic number.

139717993018 is a deficient number, since it is larger than the sum of its proper divisors (69861449894).

139717993018 is an equidigital number, since it uses as much as digits as its factorization.

139717993018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817796.

The product of its (nonzero) digits is 2571912, while the sum is 58.

The spelling of 139717993018 in words is "one hundred thirty-nine billion, seven hundred seventeen million, nine hundred ninety-three thousand, eighteen".