139713786893 has 4 divisors (see below), whose sum is σ = 139795540380. Its totient is φ = 139632033408.

The previous prime is 139713786887. The next prime is 139713786907. The reversal of 139713786893 is 398687317931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9996400324 + 129717386569 = 99982^2 + 360163^2 .

It is a cyclic number.

It is not a de Polignac number, because 139713786893 - 2²⁴ = 139697009677 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 (139713786193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40874180 + ... + 40877597.

It is an arithmetic number, because the mean of its divisors is an integer number (34948885095).

Almost surely, 2^139713786893 is an apocalyptic number.

It is an amenable number.

139713786893 is a deficient number, since it is larger than the sum of its proper divisors (81753487).

139713786893 is an equidigital number, since it uses as much as digits as its factorization.

139713786893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81753486.

The product of its digits is 41150592, while the sum is 65.

The spelling of 139713786893 in words is "one hundred thirty-nine billion, seven hundred thirteen million, seven hundred eighty-six thousand, eight hundred ninety-three".