641015910827 has 2 divisors, whose sum is σ = 641015910828. Its totient is φ = 641015910826.

The previous prime is 641015910791. The next prime is 641015910869. The reversal of 641015910827 is 728019510146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641015910827 - 2⁸ = 641015910571 is a prime.

It is not a weakly prime, because it can be changed into another prime (641015910877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320507955413 + 320507955414.

It is an arithmetic number, because the mean of its divisors is an integer number (320507955414).

Almost surely, 2^641015910827 is an apocalyptic number.

641015910827 is a deficient number, since it is larger than the sum of its proper divisors (1).

641015910827 is an equidigital number, since it uses as much as digits as its factorization.

641015910827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 641015910827 in words is "six hundred forty-one billion, fifteen million, nine hundred ten thousand, eight hundred twenty-seven".