640232232046 has 64 divisors (see below), whose sum is σ = 1098007902720. Its totient is φ = 277140645760.

The previous prime is 640232232011. The next prime is 640232232047.

640232232046 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×640232232046² (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 (640232232047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163447680 + ... + 163451596.

It is an arithmetic number, because the mean of its divisors is an integer number (17156373480).

Almost surely, 2^640232232046 is an apocalyptic number.

640232232046 is a deficient number, since it is larger than the sum of its proper divisors (457775670674).

640232232046 is a wasteful number, since it uses less digits than its factorization.

640232232046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289.

The product of its (nonzero) digits is 82944, while the sum is 34.

It can be divided in two parts, 640232 and 232046, that added together give a palindrome (872278).

The spelling of 640232232046 in words is "six hundred forty billion, two hundred thirty-two million, two hundred thirty-two thousand, forty-six".