65737668657 has 16 divisors (see below), whose sum is σ = 89107070400. Its totient is φ = 43100151552.

The previous prime is 65737668653. The next prime is 65737668697. The reversal of 65737668657 is 75686673756.

It is not a de Polignac number, because 65737668657 - 2² = 65737668653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65737668653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356532 + ... + 508517.

It is an arithmetic number, because the mean of its divisors is an integer number (5569191900).

Almost surely, 2^65737668657 is an apocalyptic number.

It is an amenable number.

65737668657 is a deficient number, since it is larger than the sum of its proper divisors (23369401743).

65737668657 is a wasteful number, since it uses less digits than its factorization.

65737668657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865472.

The product of its digits is 266716800, while the sum is 66.

The spelling of 65737668657 in words is "sixty-five billion, seven hundred thirty-seven million, six hundred sixty-eight thousand, six hundred fifty-seven".