63475264261 has 2 divisors, whose sum is σ = 63475264262. Its totient is φ = 63475264260.

The previous prime is 63475264253. The next prime is 63475264319. The reversal of 63475264261 is 16246257436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56879388036 + 6595876225 = 238494^2 + 81215^2 .

It is a cyclic number.

It is not a de Polignac number, because 63475264261 - 2³ = 63475264253 is a prime.

It is a super-2 number, since 2×63475264261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63475564261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31737632130 + 31737632131.

It is an arithmetic number, because the mean of its divisors is an integer number (31737632131).

Almost surely, 2^63475264261 is an apocalyptic number.

It is an amenable number.

63475264261 is a deficient number, since it is larger than the sum of its proper divisors (1).

63475264261 is an equidigital number, since it uses as much as digits as its factorization.

63475264261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 46.

The spelling of 63475264261 in words is "sixty-three billion, four hundred seventy-five million, two hundred sixty-four thousand, two hundred sixty-one".