640570534131 has 16 divisors (see below), whose sum is σ = 931756124160. Its totient is φ = 388217413920.

The previous prime is 640570534111. The next prime is 640570534133. The reversal of 640570534131 is 131435075046.

It is not a de Polignac number, because 640570534131 - 2¹³ = 640570525939 is a prime.

It is a super-2 number, since 2×640570534131² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 640570534131.

It is not an unprimeable number, because it can be changed into a prime (640570534133) 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, 2056750 + ... + 2347628.

It is an arithmetic number, because the mean of its divisors is an integer number (58234757760).

Almost surely, 2^640570534131 is an apocalyptic number.

640570534131 is a deficient number, since it is larger than the sum of its proper divisors (291185590029).

640570534131 is a wasteful number, since it uses less digits than its factorization.

640570534131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357626.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 640570534131 in words is "six hundred forty billion, five hundred seventy million, five hundred thirty-four thousand, one hundred thirty-one".