640033637037 has 16 divisors (see below), whose sum is σ = 875490829248. Its totient is φ = 415773613440.

The previous prime is 640033637011. The next prime is 640033637053. The reversal of 640033637037 is 730736330046.

It is not a de Polignac number, because 640033637037 - 2⁷ = 640033636909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 640033637037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640033635037) 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, 17587414 + ... + 17623767.

It is an arithmetic number, because the mean of its divisors is an integer number (54718176828).

Almost surely, 2^640033637037 is an apocalyptic number.

It is an amenable number.

640033637037 is a deficient number, since it is larger than the sum of its proper divisors (235457192211).

640033637037 is a wasteful number, since it uses less digits than its factorization.

640033637037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35211340.

The product of its (nonzero) digits is 571536, while the sum is 42.

The spelling of 640033637037 in words is "six hundred forty billion, thirty-three million, six hundred thirty-seven thousand, thirty-seven".