640033256412231 has 32 divisors (see below), whose sum is σ = 932530768747776. Its totient is φ = 387243953088000.

The previous prime is 640033256412191. The next prime is 640033256412269. The reversal of 640033256412231 is 132214652330046.

It is not a de Polignac number, because 640033256412231 - 2¹³ = 640033256404039 is a prime.

It is a super-2 number, since 2×640033256412231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640033256412281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39343311 + ... + 53178591.

It is an arithmetic number, because the mean of its divisors is an integer number (29141586523368).

Almost surely, 2^{640033256412231} is an apocalyptic number.

640033256412231 is a deficient number, since it is larger than the sum of its proper divisors (292497512335545).

640033256412231 is a wasteful number, since it uses less digits than its factorization.

640033256412231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13837663.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 640033256412231 in words is "six hundred forty trillion, thirty-three billion, two hundred fifty-six million, four hundred twelve thousand, two hundred thirty-one".