4156620657 has 48 divisors (see below), whose sum is σ = 6576030720. Its totient is φ = 2328092928.

The previous prime is 4156620653. The next prime is 4156620673. The reversal of 4156620657 is 7560266514.

It is not a de Polignac number, because 4156620657 - 2² = 4156620653 is a prime.

It is a super-2 number, since 2×4156620657² = 34554990572398223298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4156620653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1855344 + ... + 1857582.

It is an arithmetic number, because the mean of its divisors is an integer number (137000640).

Almost surely, 2^4156620657 is an apocalyptic number.

It is an amenable number.

4156620657 is a deficient number, since it is larger than the sum of its proper divisors (2419410063).

4156620657 is a wasteful number, since it uses less digits than its factorization.

4156620657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502 (or 2495 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 4156620657 is about 64471.8594194397. The cubic root of 4156620657 is about 1607.8546915024.

The spelling of 4156620657 in words is "four billion, one hundred fifty-six million, six hundred twenty thousand, six hundred fifty-seven".