641129492601 has 20 divisors (see below), whose sum is σ = 1031408701092. Its totient is φ = 394541225568.

The previous prime is 641129492599. The next prime is 641129492623. The reversal of 641129492601 is 106294921146.

641129492601 is a `hidden beast` number, since 6 + 4 + 11 + 29 + 4 + 9 + 2 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89087922576 + 552041570025 = 298476^2 + 742995^2 .

It is not a de Polignac number, because 641129492601 - 2¹ = 641129492599 is a prime.

It is a super-2 number, since 2×641129492601² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641129472601) 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 in 19 ways as a sum of consecutive naturals, for example, 304428906 + ... + 304431011.

Almost surely, 2^641129492601 is an apocalyptic number.

It is an amenable number.

641129492601 is a deficient number, since it is larger than the sum of its proper divisors (390279208491).

641129492601 is a wasteful number, since it uses less digits than its factorization.

641129492601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608859942 (or 608859933 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 641129492601 in words is "six hundred forty-one billion, one hundred twenty-nine million, four hundred ninety-two thousand, six hundred one".