139533858818 has 8 divisors (see below), whose sum is σ = 209366594940. Its totient is φ = 69744993840.

The previous prime is 139533858791. The next prime is 139533858857. The reversal of 139533858818 is 818858335931.

It can be written as a sum of positive squares in 2 ways, for example, as 94486767769 + 45047091049 = 307387^2 + 212243^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10959833 + ... + 10972556.

Almost surely, 2^139533858818 is an apocalyptic number.

139533858818 is a deficient number, since it is larger than the sum of its proper divisors (69832736122).

139533858818 is a wasteful number, since it uses less digits than its factorization.

139533858818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21935572.

The product of its digits is 24883200, while the sum is 62.

The spelling of 139533858818 in words is "one hundred thirty-nine billion, five hundred thirty-three million, eight hundred fifty-eight thousand, eight hundred eighteen".