36397644640 has 96 divisors (see below), whose sum is σ = 104054497344. Its totient is φ = 11745116160.

The previous prime is 36397644631. The next prime is 36397644649. The reversal of 36397644640 is 4644679363.

It is an interprime number because it is at equal distance from previous prime (36397644631) and next prime (36397644649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36397644649) 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, 936781 + ... + 974860.

It is an arithmetic number, because the mean of its divisors is an integer number (1083901014).

Almost surely, 2^36397644640 is an apocalyptic number.

It is an amenable number.

36397644640 is an abundant number, since it is smaller than the sum of its proper divisors (67656852704).

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

36397644640 is a wasteful number, since it uses less digits than its factorization.

36397644640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911680 (or 1911672 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 52.

The spelling of 36397644640 in words is "thirty-six billion, three hundred ninety-seven million, six hundred forty-four thousand, six hundred forty".