641032525477 has 2 divisors, whose sum is σ = 641032525478. Its totient is φ = 641032525476.

The previous prime is 641032525433. The next prime is 641032525499. The reversal of 641032525477 is 774525230146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381634830756 + 259397694721 = 617766^2 + 509311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641032525477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641032525417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320516262738 + 320516262739.

It is an arithmetic number, because the mean of its divisors is an integer number (320516262739).

Almost surely, 2^641032525477 is an apocalyptic number.

It is an amenable number.

641032525477 is a deficient number, since it is larger than the sum of its proper divisors (1).

641032525477 is an equidigital number, since it uses as much as digits as its factorization.

641032525477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 641032525477 in words is "six hundred forty-one billion, thirty-two million, five hundred twenty-five thousand, four hundred seventy-seven".