641628873071 has 2 divisors, whose sum is σ = 641628873072. Its totient is φ = 641628873070.

The previous prime is 641628873059. The next prime is 641628873089. The reversal of 641628873071 is 170378826146.

It is a happy number.

641628873071 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 641628873071 - 2¹⁰ = 641628872047 is a prime.

It is a super-2 number, since 2×641628873071² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641628873371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320814436535 + 320814436536.

It is an arithmetic number, because the mean of its divisors is an integer number (320814436536).

Almost surely, 2^641628873071 is an apocalyptic number.

641628873071 is a deficient number, since it is larger than the sum of its proper divisors (1).

641628873071 is an equidigital number, since it uses as much as digits as its factorization.

641628873071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 641628873071 in words is "six hundred forty-one billion, six hundred twenty-eight million, eight hundred seventy-three thousand, seventy-one".