139268297837601 has 9 divisors (see below), whose sum is σ = 201165370237299. Its totient is φ = 92845508289336.

The previous prime is 139268297837587. The next prime is 139268297837663. The reversal of 139268297837601 is 106738792862931.

The square root of 139268297837601 is 11801199.

It is a perfect power (a square), and thus also a powerful number.

139268297837601 is a `hidden beast` number, since 1 + 3 + 9 + 2 + 6 + 8 + 2 + 9 + 7 + 8 + 3 + 7 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 139063881726225 + 204416111376 = 11792535^2 + 452124^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 139268297837601 - 2⁵ = 139268297837569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139268297837601.

It is not an unprimeable number, because it can be changed into a prime (139268292837601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33436731 + ... + 37370463.

Almost surely, 2^{139268297837601} is an apocalyptic number.

139268297837601 is the 11801199-th square number.

139268297837601 is the 5900600-th centered octagonal number.

It is an amenable number.

139268297837601 is a deficient number, since it is larger than the sum of its proper divisors (61897072399698).

139268297837601 is an frugal number, since it uses more digits than its factorization.

139268297837601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7867472 (or 3933736 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 72.

The spelling of 139268297837601 in words is "one hundred thirty-nine trillion, two hundred sixty-eight billion, two hundred ninety-seven million, eight hundred thirty-seven thousand, six hundred one".