641264433304093 has 2 divisors, whose sum is σ = 641264433304094. Its totient is φ = 641264433304092.

The previous prime is 641264433304069. The next prime is 641264433304199. The reversal of 641264433304093 is 390403334462146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 583639983284164 + 57624450019929 = 24158642^2 + 7591077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641264433304093 is a prime.

It is a super-2 number, since 2×641264433304093² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641264433304093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641264433304063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320632216652046 + 320632216652047.

It is an arithmetic number, because the mean of its divisors is an integer number (320632216652047).

Almost surely, 2^{641264433304093} is an apocalyptic number.

It is an amenable number.

641264433304093 is a deficient number, since it is larger than the sum of its proper divisors (1).

641264433304093 is an equidigital number, since it uses as much as digits as its factorization.

641264433304093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13436928, while the sum is 52.

The spelling of 641264433304093 in words is "six hundred forty-one trillion, two hundred sixty-four billion, four hundred thirty-three million, three hundred four thousand, ninety-three".