641167761139 has 2 divisors, whose sum is σ = 641167761140. Its totient is φ = 641167761138.

The previous prime is 641167761119. The next prime is 641167761149. The reversal of 641167761139 is 931167761146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641167761139 - 2⁵ = 641167761107 is a prime.

It is a super-2 number, since 2×641167761139² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641167761119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320583880569 + 320583880570.

It is an arithmetic number, because the mean of its divisors is an integer number (320583880570).

Almost surely, 2^641167761139 is an apocalyptic number.

641167761139 is a deficient number, since it is larger than the sum of its proper divisors (1).

641167761139 is an equidigital number, since it uses as much as digits as its factorization.

641167761139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 52.

The spelling of 641167761139 in words is "six hundred forty-one billion, one hundred sixty-seven million, seven hundred sixty-one thousand, one hundred thirty-nine".