139511768386 has 8 divisors (see below), whose sum is σ = 216483778620. Its totient is φ = 67350508848.

The previous prime is 139511768381. The next prime is 139511768413. The reversal of 139511768386 is 683867115931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121574255625 + 17937512761 = 348675^2 + 133931^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 2405375317 = 139511768386 / (1 + 3 + 9 + 5 + 1 + 1 + 7 + 6 + 8 + 3 + 8 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 139511768386.

It is not an unprimeable number, because it can be changed into a prime (139511768381) 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, 1202687601 + ... + 1202687716.

Almost surely, 2^139511768386 is an apocalyptic number.

139511768386 is a deficient number, since it is larger than the sum of its proper divisors (76972010234).

139511768386 is a wasteful number, since it uses less digits than its factorization.

139511768386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405375348.

The product of its digits is 6531840, while the sum is 58.

The spelling of 139511768386 in words is "one hundred thirty-nine billion, five hundred eleven million, seven hundred sixty-eight thousand, three hundred eighty-six".