8157066695657 has 8 divisors (see below), whose sum is σ = 9049442251680. Its totient is φ = 7289828479360.

The previous prime is 8157066695653. The next prime is 8157066695669. The reversal of 8157066695657 is 7565966607518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8157066695657 - 2² = 8157066695653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8157066695653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6284334248 + ... + 6284335545.

It is an arithmetic number, because the mean of its divisors is an integer number (1131180281460).

Almost surely, 2^{8157066695657} is an apocalyptic number.

It is an amenable number.

8157066695657 is a deficient number, since it is larger than the sum of its proper divisors (892375556023).

8157066695657 is a wasteful number, since it uses less digits than its factorization.

8157066695657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568669863.

The product of its (nonzero) digits is 571536000, while the sum is 71.

The spelling of 8157066695657 in words is "eight trillion, one hundred fifty-seven billion, sixty-six million, six hundred ninety-five thousand, six hundred fifty-seven".