8657155379 has 2 divisors, whose sum is σ = 8657155380. Its totient is φ = 8657155378.

The previous prime is 8657155363. The next prime is 8657155393. The reversal of 8657155379 is 9735517568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8657155379 - 2⁴ = 8657155363 is a prime.

It is a super-2 number, since 2×8657155379² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8657155349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4328577689 + 4328577690.

It is an arithmetic number, because the mean of its divisors is an integer number (4328577690).

Almost surely, 2^8657155379 is an apocalyptic number.

8657155379 is a deficient number, since it is larger than the sum of its proper divisors (1).

8657155379 is an equidigital number, since it uses as much as digits as its factorization.

8657155379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938000, while the sum is 56.

The square root of 8657155379 is about 93043.8357925983. The cubic root of 8657155379 is about 2053.3283531889.

The spelling of 8657155379 in words is "eight billion, six hundred fifty-seven million, one hundred fifty-five thousand, three hundred seventy-nine".