640265575011 has 16 divisors (see below), whose sum is σ = 903928472064. Its totient is φ = 401724537984.

The previous prime is 640265574967. The next prime is 640265575043. The reversal of 640265575011 is 110575562046.

It is not a de Polignac number, because 640265575011 - 2¹⁴ = 640265558627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (640265575511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2045226 + ... + 2337408.

It is an arithmetic number, because the mean of its divisors is an integer number (56495529504).

Almost surely, 2^640265575011 is an apocalyptic number.

640265575011 is a deficient number, since it is larger than the sum of its proper divisors (263662897053).

640265575011 is a wasteful number, since it uses less digits than its factorization.

640265575011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335170.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 640265575011 in words is "six hundred forty billion, two hundred sixty-five million, five hundred seventy-five thousand, eleven".