139431565604 has 12 divisors (see below), whose sum is σ = 250599976284. Its totient is φ = 67831572384.

The previous prime is 139431565597. The next prime is 139431565639. The reversal of 139431565604 is 406565134931.

It can be written as a sum of positive squares in 2 ways, for example, as 119233471204 + 20198094400 = 345302^2 + 142120^2 .

It is a super-2 number, since 2×139431565604² (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, 471052439 + ... + 471052734.

It is an arithmetic number, because the mean of its divisors is an integer number (20883331357).

Almost surely, 2^139431565604 is an apocalyptic number.

It is an amenable number.

139431565604 is a deficient number, since it is larger than the sum of its proper divisors (111168410680).

139431565604 is a wasteful number, since it uses less digits than its factorization.

139431565604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942105214 (or 942105212 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 139431565604 in words is "one hundred thirty-nine billion, four hundred thirty-one million, five hundred sixty-five thousand, six hundred four".