64022268688 has 30 divisors (see below), whose sum is σ = 144295089486. Its totient is φ = 27438114816.

The previous prime is 64022268659. The next prime is 64022268701. The reversal of 64022268688 is 88686222046.

It can be written as a sum of positive squares in only one way, i.e., 43502279184 + 20519989504 = 208572^2 + 143248^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40829745 + ... + 40831312.

Almost surely, 2^64022268688 is an apocalyptic number.

It is an amenable number.

64022268688 is an abundant number, since it is smaller than the sum of its proper divisors (80272820798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64022268688 is a wasteful number, since it uses less digits than its factorization.

64022268688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81661079 (or 81661066 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 52.

The spelling of 64022268688 in words is "sixty-four billion, twenty-two million, two hundred sixty-eight thousand, six hundred eighty-eight".