6139953657 has 28 divisors (see below), whose sum is σ = 9226109184. Its totient is φ = 4084237080.

The previous prime is 6139953623. The next prime is 6139953667. The reversal of 6139953657 is 7563599316.

6139953657 is a `hidden beast` number, since 6 + 13 + 99 + 536 + 5 + 7 = 666.

It is not a de Polignac number, because 6139953657 - 2¹⁰ = 6139952633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6139953667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 328432 + ... + 346622.

Almost surely, 2^6139953657 is an apocalyptic number.

It is an amenable number.

6139953657 is a deficient number, since it is larger than the sum of its proper divisors (3086155527).

6139953657 is an equidigital number, since it uses as much as digits as its factorization.

6139953657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18672 (or 18657 counting only the distinct ones).

The product of its digits is 4592700, while the sum is 54.

The square root of 6139953657 is about 78357.8563833902. The cubic root of 6139953657 is about 1831.1406245724.

The spelling of 6139953657 in words is "six billion, one hundred thirty-nine million, nine hundred fifty-three thousand, six hundred fifty-seven".