63827664540 has 24 divisors (see below), whose sum is σ = 178717460880. Its totient is φ = 17020710528.

The previous prime is 63827664533. The next prime is 63827664569. The reversal of 63827664540 is 4546672836.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531897145 + ... + 531897264.

It is an arithmetic number, because the mean of its divisors is an integer number (7446560870).

Almost surely, 2^63827664540 is an apocalyptic number.

63827664540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63827664540 is an abundant number, since it is smaller than the sum of its proper divisors (114889796340).

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

63827664540 is a wasteful number, since it uses less digits than its factorization.

63827664540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063794421 (or 1063794419 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 51.

The spelling of 63827664540 in words is "sixty-three billion, eight hundred twenty-seven million, six hundred sixty-four thousand, five hundred forty".