641876066417 has 8 divisors (see below), whose sum is σ = 653100991200. Its totient is φ = 630662664064.

The previous prime is 641876066411. The next prime is 641876066437. The reversal of 641876066417 is 714660678146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641876066417 - 2¹⁶ = 641876000881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641876066411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2768183 + ... + 2991084.

It is an arithmetic number, because the mean of its divisors is an integer number (81637623900).

Almost surely, 2^641876066417 is an apocalyptic number.

It is an amenable number.

641876066417 is a deficient number, since it is larger than the sum of its proper divisors (11224924783).

641876066417 is a wasteful number, since it uses less digits than its factorization.

641876066417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5761215.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 641876066417 in words is "six hundred forty-one billion, eight hundred seventy-six million, sixty-six thousand, four hundred seventeen".