641514631040 has 64 divisors (see below), whose sum is σ = 1600300121760. Its totient is φ = 245449070592.

The previous prime is 641514630947. The next prime is 641514631061. The reversal of 641514631040 is 40136415146.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21775859 + ... + 21805298.

Almost surely, 2^641514631040 is an apocalyptic number.

It is an amenable number.

641514631040 is an abundant number, since it is smaller than the sum of its proper divisors (958785490720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641514631040 is a wasteful number, since it uses less digits than its factorization.

641514631040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43581199 (or 43581187 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 641514631040 in words is "six hundred forty-one billion, five hundred fourteen million, six hundred thirty-one thousand, forty".