64700888157 has 108 divisors (see below), whose sum is σ = 104383880640. Its totient is φ = 40084350768.

The previous prime is 64700888123. The next prime is 64700888171. The reversal of 64700888157 is 75188800746.

It is a happy number.

64700888157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64700888157 - 2¹⁸ = 64700626013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64700888257) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 139742508 + ... + 139742970.

Almost surely, 2^64700888157 is an apocalyptic number.

It is an amenable number.

64700888157 is a deficient number, since it is larger than the sum of its proper divisors (39682992483).

64700888157 is an frugal number, since it uses more digits than its factorization.

64700888157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 64700888157 in words is "sixty-four billion, seven hundred million, eight hundred eighty-eight thousand, one hundred fifty-seven".