63648851040531 has 80 divisors (see below), whose sum is σ = 100237320374400. Its totient is φ = 40137969336192.

The previous prime is 63648851040521. The next prime is 63648851040637. The reversal of 63648851040531 is 13504015884636.

It is a happy number.

63648851040531 is a `hidden beast` number, since 6 + 3 + 6 + 4 + 88 + 510 + 40 + 5 + 3 + 1 = 666.

It is not a de Polignac number, because 63648851040531 - 2¹⁴ = 63648851024147 is a prime.

It is a super-2 number, since 2×63648851040531² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63648851040521) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6856491216 + ... + 6856500498.

It is an arithmetic number, because the mean of its divisors is an integer number (1252966504680).

Almost surely, 2^{63648851040531} is an apocalyptic number.

63648851040531 is a deficient number, since it is larger than the sum of its proper divisors (36588469333869).

63648851040531 is a wasteful number, since it uses less digits than its factorization.

63648851040531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15630 (or 15621 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 63648851040531 in words is "sixty-three trillion, six hundred forty-eight billion, eight hundred fifty-one million, forty thousand, five hundred thirty-one".