139531797224 has 8 divisors (see below), whose sum is σ = 261622119810. Its totient is φ = 69765898608.

The previous prime is 139531797211. The next prime is 139531797269. The reversal of 139531797224 is 422797135931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 103741968100 + 35789829124 = 322090^2 + 189182^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8720737319 + ... + 8720737334.

Almost surely, 2^139531797224 is an apocalyptic number.

It is an amenable number.

139531797224 is a deficient number, since it is larger than the sum of its proper divisors (122090322586).

139531797224 is a wasteful number, since it uses less digits than its factorization.

139531797224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17441474659 (or 17441474655 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 53.

The spelling of 139531797224 in words is "one hundred thirty-nine billion, five hundred thirty-one million, seven hundred ninety-seven thousand, two hundred twenty-four".