641514630987 has 24 divisors (see below), whose sum is σ = 939992601600. Its totient is φ = 421550276400.

The previous prime is 641514630947. The next prime is 641514631061. The reversal of 641514630987 is 789036415146.

641514630987 is a `hidden beast` number, since 6 + 4 + 1 + 514 + 6 + 30 + 98 + 7 = 666.

641514630987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641514630987 - 2¹⁶ = 641514565451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (641514630947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1482139 + ... + 1865412.

It is an arithmetic number, because the mean of its divisors is an integer number (39166358400).

Almost surely, 2^641514630987 is an apocalyptic number.

641514630987 is a deficient number, since it is larger than the sum of its proper divisors (298477970613).

641514630987 is a wasteful number, since it uses less digits than its factorization.

641514630987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347863 (or 3347860 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 641514630987 in words is "six hundred forty-one billion, five hundred fourteen million, six hundred thirty thousand, nine hundred eighty-seven".