63641260761 has 8 divisors (see below), whose sum is σ = 91382323200. Its totient is φ = 39163852752.

The previous prime is 63641260733. The next prime is 63641260799. The reversal of 63641260761 is 16706214636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-63641260761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63641260861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815913561 + ... + 815913638.

It is an arithmetic number, because the mean of its divisors is an integer number (11422790400).

Almost surely, 2^63641260761 is an apocalyptic number.

It is an amenable number.

63641260761 is a deficient number, since it is larger than the sum of its proper divisors (27741062439).

63641260761 is a wasteful number, since it uses less digits than its factorization.

63641260761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631827215.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 63641260761 in words is "sixty-three billion, six hundred forty-one million, two hundred sixty thousand, seven hundred sixty-one".