640130202036 has 72 divisors (see below), whose sum is σ = 1798788852224. Its totient is φ = 190609485120.

The previous prime is 640130202031. The next prime is 640130202143. The reversal of 640130202036 is 630202031046.

640130202036 is a `hidden beast` number, since 6 + 401 + 30 + 20 + 203 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640130202031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22046776 + ... + 22075791.

Almost surely, 2^640130202036 is an apocalyptic number.

It is an amenable number.

640130202036 is an abundant number, since it is smaller than the sum of its proper divisors (1158658650188).

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

640130202036 is a wasteful number, since it uses less digits than its factorization.

640130202036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44122621 (or 44122616 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The spelling of 640130202036 in words is "six hundred forty billion, one hundred thirty million, two hundred two thousand, thirty-six".