64736307636 has 96 divisors (see below), whose sum is σ = 202810288128. Its totient is φ = 15521189760.

The previous prime is 64736307607. The next prime is 64736307667. The reversal of 64736307636 is 63670363746.

64736307636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2682640 + ... + 2706663.

It is an arithmetic number, because the mean of its divisors is an integer number (2112607168).

Almost surely, 2^64736307636 is an apocalyptic number.

64736307636 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64736307636 is an abundant number, since it is smaller than the sum of its proper divisors (138073980492).

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

64736307636 is a wasteful number, since it uses less digits than its factorization.

64736307636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389341 (or 5389339 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 51.

The spelling of 64736307636 in words is "sixty-four billion, seven hundred thirty-six million, three hundred seven thousand, six hundred thirty-six".