63297660544 has 32 divisors (see below), whose sum is σ = 127216773540. Its totient is φ = 31368744960.

The previous prime is 63297660533. The next prime is 63297660653. The reversal of 63297660544 is 44506679236.

63297660544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52572986944 + 10724673600 = 229288^2 + 103560^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 63297660491 and 63297660500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173647 + ... + 2202574.

Almost surely, 2^63297660544 is an apocalyptic number.

63297660544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

63297660544 is an abundant number, since it is smaller than the sum of its proper divisors (63919112996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63297660544 is a wasteful number, since it uses less digits than its factorization.

63297660544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376348 (or 4376336 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 52.

The spelling of 63297660544 in words is "sixty-three billion, two hundred ninety-seven million, six hundred sixty thousand, five hundred forty-four".