63669132261 has 24 divisors (see below), whose sum is σ = 105649202880. Its totient is φ = 36193844736.

The previous prime is 63669132253. The next prime is 63669132269. The reversal of 63669132261 is 16223196636.

63669132261 is a `hidden beast` number, since 636 + 6 + 9 + 1 + 3 + 2 + 2 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (63669132253) and next prime (63669132269).

It is not a de Polignac number, because 63669132261 - 2³ = 63669132253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63669132269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2606031 + ... + 2630348.

It is an arithmetic number, because the mean of its divisors is an integer number (4402050120).

Almost surely, 2^63669132261 is an apocalyptic number.

It is an amenable number.

63669132261 is a deficient number, since it is larger than the sum of its proper divisors (41980070619).

63669132261 is a wasteful number, since it uses less digits than its factorization.

63669132261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236585 (or 5236582 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The spelling of 63669132261 in words is "sixty-three billion, six hundred sixty-nine million, one hundred thirty-two thousand, two hundred sixty-one".