413631772621 has 2 divisors, whose sum is σ = 413631772622. Its totient is φ = 413631772620.

The previous prime is 413631772583. The next prime is 413631772637. The reversal of 413631772621 is 126277136314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407918529225 + 5713243396 = 638685^2 + 75586^2 .

It is a cyclic number.

It is not a de Polignac number, because 413631772621 - 2¹⁹ = 413631248333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (413631772651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206815886310 + 206815886311.

It is an arithmetic number, because the mean of its divisors is an integer number (206815886311).

Almost surely, 2^413631772621 is an apocalyptic number.

It is an amenable number.

413631772621 is a deficient number, since it is larger than the sum of its proper divisors (1).

413631772621 is an equidigital number, since it uses as much as digits as its factorization.

413631772621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The spelling of 413631772621 in words is "four hundred thirteen billion, six hundred thirty-one million, seven hundred seventy-two thousand, six hundred twenty-one".