36640667709 has 16 divisors (see below), whose sum is σ = 55306670400. Its totient is φ = 23966221968.

The previous prime is 36640667683. The next prime is 36640667731. The reversal of 36640667709 is 90776604663.

36640667709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36640667709 - 2⁵ = 36640667677 is a prime.

It is a super-2 number, since 2×36640667709² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36640666709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12801039 + ... + 12803900.

It is an arithmetic number, because the mean of its divisors is an integer number (3456666900).

Almost surely, 2^36640667709 is an apocalyptic number.

It is an amenable number.

36640667709 is a deficient number, since it is larger than the sum of its proper divisors (18666002691).

36640667709 is a wasteful number, since it uses less digits than its factorization.

36640667709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25605001 (or 25604995 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 36640667709 in words is "thirty-six billion, six hundred forty million, six hundred sixty-seven thousand, seven hundred nine".