641166680193 has 32 divisors (see below), whose sum is σ = 969839928960. Its totient is φ = 373514042880.

The previous prime is 641166680183. The next prime is 641166680197. The reversal of 641166680193 is 391086661146.

It is not a de Polignac number, because 641166680193 - 2⁴ = 641166680177 is a prime.

It is a super-2 number, since 2×641166680193² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641166680197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651355 + ... + 1306367.

It is an arithmetic number, because the mean of its divisors is an integer number (30307497780).

Almost surely, 2^641166680193 is an apocalyptic number.

It is an amenable number.

641166680193 is a deficient number, since it is larger than the sum of its proper divisors (328673248767).

641166680193 is a wasteful number, since it uses less digits than its factorization.

641166680193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656369.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 641166680193 in words is "six hundred forty-one billion, one hundred sixty-six million, six hundred eighty thousand, one hundred ninety-three".