641015910791 has 2 divisors, whose sum is σ = 641015910792. Its totient is φ = 641015910790.

The previous prime is 641015910781. The next prime is 641015910827. The reversal of 641015910791 is 197019510146.

641015910791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641015910791 - 2³⁴ = 623836041607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641015910781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320507955395 + 320507955396.

It is an arithmetic number, because the mean of its divisors is an integer number (320507955396).

Almost surely, 2^641015910791 is an apocalyptic number.

641015910791 is a deficient number, since it is larger than the sum of its proper divisors (1).

641015910791 is an equidigital number, since it uses as much as digits as its factorization.

641015910791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 641015910791 in words is "six hundred forty-one billion, fifteen million, nine hundred ten thousand, seven hundred ninety-one".