140366976389649 has 27 divisors (see below), whose sum is σ = 215381397256987. Its totient is φ = 88073017825344.

The previous prime is 140366976389609. The next prime is 140366976389659. The reversal of 140366976389649 is 946983679663041.

The square root of 140366976389649 is 11847657.

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

140366976389649 is a `hidden beast` number, since 1 + 40 + 36 + 69 + 76 + 389 + 6 + 49 = 666.

140366976389649 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 109282248054225 + 31084728335424 = 10453815^2 + 5575368^2 .

It is a de Polignac number, because none of the positive numbers 2^k-140366976389649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140366976389609) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 604114354 + ... + 604346660.

Almost surely, 2^{140366976389649} is an apocalyptic number.

140366976389649 is the 11847657-th square number.

140366976389649 is the 5923829-th centered octagonal number.

It is an amenable number.

140366976389649 is a deficient number, since it is larger than the sum of its proper divisors (75014420867338).

140366976389649 is an frugal number, since it uses more digits than its factorization.

140366976389649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464654 (or 232327 counting only the distinct ones).

The product of its (nonzero) digits is 7618738176, while the sum is 81.

The spelling of 140366976389649 in words is "one hundred forty trillion, three hundred sixty-six billion, nine hundred seventy-six million, three hundred eighty-nine thousand, six hundred forty-nine".