63528538372 has 24 divisors (see below), whose sum is σ = 124932378816. Its totient is φ = 28046043168.

The previous prime is 63528538357. The next prime is 63528538373. The reversal of 63528538372 is 27383582536.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (63528538373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26557558 + ... + 26559949.

It is an arithmetic number, because the mean of its divisors is an integer number (5205515784).

Almost surely, 2^63528538372 is an apocalyptic number.

It is an amenable number.

63528538372 is a deficient number, since it is larger than the sum of its proper divisors (61403840444).

63528538372 is a wasteful number, since it uses less digits than its factorization.

63528538372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53117547 (or 53117545 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 52.

The spelling of 63528538372 in words is "sixty-three billion, five hundred twenty-eight million, five hundred thirty-eight thousand, three hundred seventy-two".