63916244961 has 16 divisors (see below), whose sum is σ = 85576181184. Its totient is φ = 42433840064.

The previous prime is 63916244939. The next prime is 63916244971. The reversal of 63916244961 is 16944261936.

It is a cyclic number.

It is not a de Polignac number, because 63916244961 - 2⁶ = 63916244897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63916244911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930190 + ... + 996536.

It is an arithmetic number, because the mean of its divisors is an integer number (5348511324).

Almost surely, 2^63916244961 is an apocalyptic number.

It is an amenable number.

63916244961 is a deficient number, since it is larger than the sum of its proper divisors (21659936223).

63916244961 is a wasteful number, since it uses less digits than its factorization.

63916244961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67680.

The product of its digits is 1679616, while the sum is 51.

The spelling of 63916244961 in words is "sixty-three billion, nine hundred sixteen million, two hundred forty-four thousand, nine hundred sixty-one".