640713205183 has 2 divisors, whose sum is σ = 640713205184. Its totient is φ = 640713205182.

The previous prime is 640713205177. The next prime is 640713205213. The reversal of 640713205183 is 381502317046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 640713205183 - 2³³ = 632123270591 is a prime.

It is a super-2 number, since 2×640713205183² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640713202183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320356602591 + 320356602592.

It is an arithmetic number, because the mean of its divisors is an integer number (320356602592).

Almost surely, 2^640713205183 is an apocalyptic number.

640713205183 is a deficient number, since it is larger than the sum of its proper divisors (1).

640713205183 is an equidigital number, since it uses as much as digits as its factorization.

640713205183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 640713205183 in words is "six hundred forty billion, seven hundred thirteen million, two hundred five thousand, one hundred eighty-three".