63641075450 has 24 divisors (see below), whose sum is σ = 118653609180. Its totient is φ = 25395955200.

The previous prime is 63641075437. The next prime is 63641075483. The reversal of 63641075450 is 5457014636.

It can be written as a sum of positive squares in 6 ways, for example, as 616479241 + 63024596209 = 24829^2 + 251047^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 63641075398 and 63641075407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1490615 + ... + 1532714.

Almost surely, 2^63641075450 is an apocalyptic number.

63641075450 is a deficient number, since it is larger than the sum of its proper divisors (55012533730).

63641075450 is a wasteful number, since it uses less digits than its factorization.

63641075450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023762 (or 3023757 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 63641075450 in words is "sixty-three billion, six hundred forty-one million, seventy-five thousand, four hundred fifty".