641435755087 has 2 divisors, whose sum is σ = 641435755088. Its totient is φ = 641435755086.

The previous prime is 641435755031. The next prime is 641435755091. The reversal of 641435755087 is 780557534146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641435755087 is a prime.

It is a super-3 number, since 3×641435755087³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641435755097) 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, 320717877543 + 320717877544.

It is an arithmetic number, because the mean of its divisors is an integer number (320717877544).

Almost surely, 2^641435755087 is an apocalyptic number.

641435755087 is a deficient number, since it is larger than the sum of its proper divisors (1).

641435755087 is an equidigital number, since it uses as much as digits as its factorization.

641435755087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112000, while the sum is 55.

The spelling of 641435755087 in words is "six hundred forty-one billion, four hundred thirty-five million, seven hundred fifty-five thousand, eighty-seven".