64266602064 has 80 divisors (see below), whose sum is σ = 193776549888. Its totient is φ = 17971203456.

The previous prime is 64266602021. The next prime is 64266602087. The reversal of 64266602064 is 46020666246.

64266602064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64266602064² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2018992 + ... + 2050575.

Almost surely, 2^64266602064 is an apocalyptic number.

It is an amenable number.

64266602064 is an abundant number, since it is smaller than the sum of its proper divisors (129509947824).

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

64266602064 is a wasteful number, since it uses less digits than its factorization.

64266602064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069632 (or 4069626 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 64266602064 in words is "sixty-four billion, two hundred sixty-six million, six hundred two thousand, sixty-four".