64826795988 has 24 divisors (see below), whose sum is σ = 168069471360. Its totient is φ = 21608931960.

The previous prime is 64826795941. The next prime is 64826795993. The reversal of 64826795988 is 88959762846.

64826795988 is a `hidden beast` number, since 6 + 4 + 8 + 26 + 7 + 9 + 598 + 8 = 666.

It is a super-2 number, since 2×64826795988² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 300123948 + ... + 300124163.

It is an arithmetic number, because the mean of its divisors is an integer number (7002894640).

Almost surely, 2^64826795988 is an apocalyptic number.

It is an amenable number.

64826795988 is an abundant number, since it is smaller than the sum of its proper divisors (103242675372).

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

64826795988 is a wasteful number, since it uses less digits than its factorization.

64826795988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600248124 (or 600248116 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 72.

The spelling of 64826795988 in words is "sixty-four billion, eight hundred twenty-six million, seven hundred ninety-five thousand, nine hundred eighty-eight".