64767827136 has 28 divisors (see below), whose sum is σ = 171364876472. Its totient is φ = 21589275648.

The previous prime is 64767827101. The next prime is 64767827143. The reversal of 64767827136 is 63172876746.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168666025 + ... + 168666408.

Almost surely, 2^64767827136 is an apocalyptic number.

It is an amenable number.

64767827136 is an abundant number, since it is smaller than the sum of its proper divisors (106597049336).

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

64767827136 is a wasteful number, since it uses less digits than its factorization.

64767827136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337332448 (or 337332438 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 57.

The spelling of 64767827136 in words is "sixty-four billion, seven hundred sixty-seven million, eight hundred twenty-seven thousand, one hundred thirty-six".