63648461478475 has 48 divisors (see below), whose sum is σ = 83472669907200. Its totient is φ = 48065402880000.

The previous prime is 63648461478419. The next prime is 63648461478491. The reversal of 63648461478475 is 57487416484636.

It is not a de Polignac number, because 63648461478475 - 2⁷ = 63648461478347 is a prime.

It is a super-2 number, since 2×63648461478475² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63648461478398 and 63648461478407.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172703701 + ... + 173071849.

It is an arithmetic number, because the mean of its divisors is an integer number (1739013956400).

Almost surely, 2^{63648461478475} is an apocalyptic number.

63648461478475 is a deficient number, since it is larger than the sum of its proper divisors (19824208428725).

63648461478475 is a wasteful number, since it uses less digits than its factorization.

63648461478475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373672 (or 373667 counting only the distinct ones).

The product of its digits is 2601123840, while the sum is 73.

The spelling of 63648461478475 in words is "sixty-three trillion, six hundred forty-eight billion, four hundred sixty-one million, four hundred seventy-eight thousand, four hundred seventy-five".