640201412135331 has 6 divisors (see below), whose sum is σ = 924735373084380. Its totient is φ = 426800941423548.

The previous prime is 640201412135317. The next prime is 640201412135339. The reversal of 640201412135331 is 133531214102046.

640201412135331 is a `hidden beast` number, since 6 + 4 + 0 + 201 + 412 + 1 + 3 + 5 + 3 + 31 = 666.

It is not a de Polignac number, because 640201412135331 - 2¹⁵ = 640201412102563 is a prime.

It is a super-2 number, since 2×640201412135331² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (640201412135339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35566745118621 + ... + 35566745118638.

It is an arithmetic number, because the mean of its divisors is an integer number (154122562180730).

Almost surely, 2^{640201412135331} is an apocalyptic number.

640201412135331 is a deficient number, since it is larger than the sum of its proper divisors (284533960949049).

640201412135331 is a wasteful number, since it uses less digits than its factorization.

640201412135331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71133490237265 (or 71133490237262 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 640201412135331 its reverse (133531214102046), we get a palindrome (773732626237377).

The spelling of 640201412135331 in words is "six hundred forty trillion, two hundred one billion, four hundred twelve million, one hundred thirty-five thousand, three hundred thirty-one".