64136368792 has 16 divisors (see below), whose sum is σ = 127329555960. Its totient is φ = 30181820544.

The previous prime is 64136368781. The next prime is 64136368819. The reversal of 64136368792 is 29786363146.

It is a super-2 number, since 2×64136368792² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235795338 + ... + 235795609.

Almost surely, 2^64136368792 is an apocalyptic number.

It is an amenable number.

64136368792 is a deficient number, since it is larger than the sum of its proper divisors (63193187168).

64136368792 is a wasteful number, since it uses less digits than its factorization.

64136368792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471590970 (or 471590966 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 55.

The spelling of 64136368792 in words is "sixty-four billion, one hundred thirty-six million, three hundred sixty-eight thousand, seven hundred ninety-two".