64299722697 has 20 divisors (see below), whose sum is σ = 109774483456. Its totient is φ = 36742698360.

The previous prime is 64299722681. The next prime is 64299722699. The reversal of 64299722697 is 79622799246.

It is not a de Polignac number, because 64299722697 - 2⁴ = 64299722681 is a prime.

It is a super-2 number, since 2×64299722697² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64299722699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56701129 + ... + 56702262.

Almost surely, 2^64299722697 is an apocalyptic number.

It is an amenable number.

64299722697 is a deficient number, since it is larger than the sum of its proper divisors (45474760759).

64299722697 is a wasteful number, since it uses less digits than its factorization.

64299722697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113403410 (or 113403401 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 63.

The spelling of 64299722697 in words is "sixty-four billion, two hundred ninety-nine million, seven hundred twenty-two thousand, six hundred ninety-seven".