641680023459 has 16 divisors (see below), whose sum is σ = 878689232640. Its totient is φ = 416372325600.

The previous prime is 641680023443. The next prime is 641680023487. The reversal of 641680023459 is 954320086146.

It is not a de Polignac number, because 641680023459 - 2⁴ = 641680023443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (641680024459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17929207 + ... + 17964960.

It is an arithmetic number, because the mean of its divisors is an integer number (54918077040).

Almost surely, 2^641680023459 is an apocalyptic number.

641680023459 is a deficient number, since it is larger than the sum of its proper divisors (237009209181).

641680023459 is a wasteful number, since it uses less digits than its factorization.

641680023459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35894330.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 641680023459 in words is "six hundred forty-one billion, six hundred eighty million, twenty-three thousand, four hundred fifty-nine".