139492680660 has 60 divisors (see below), whose sum is σ = 437593710708. Its totient is φ = 37198047744.

The previous prime is 139492680643. The next prime is 139492680667. The reversal of 139492680660 is 66086294931.

139492680660 is a `hidden beast` number, since 1 + 39 + 492 + 68 + 0 + 6 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45658287684 + 93834392976 = 213678^2 + 306324^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 139492680597 and 139492680606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139492680667) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43051677 + ... + 43054916.

Almost surely, 2^139492680660 is an apocalyptic number.

139492680660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139492680660 is an abundant number, since it is smaller than the sum of its proper divisors (298101030048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139492680660 is a wasteful number, since it uses less digits than its factorization.

139492680660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86106614 (or 86106603 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 139492680660 in words is "one hundred thirty-nine billion, four hundred ninety-two million, six hundred eighty thousand, six hundred sixty".