640714876365 has 16 divisors (see below), whose sum is σ = 1029659859648. Its totient is φ = 340209248256.

The previous prime is 640714876363. The next prime is 640714876433. The reversal of 640714876365 is 563678417046.

640714876365 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 640714876365 - 2¹ = 640714876363 is a prime.

It is a super-2 number, since 2×640714876365² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640714876363) 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, 94081012 + ... + 94087821.

It is an arithmetic number, because the mean of its divisors is an integer number (64353741228).

Almost surely, 2^640714876365 is an apocalyptic number.

It is an amenable number.

640714876365 is a deficient number, since it is larger than the sum of its proper divisors (388944983283).

640714876365 is a wasteful number, since it uses less digits than its factorization.

640714876365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188169068.

The product of its (nonzero) digits is 20321280, while the sum is 57.

The spelling of 640714876365 in words is "six hundred forty billion, seven hundred fourteen million, eight hundred seventy-six thousand, three hundred sixty-five".