63539000987 has 32 divisors (see below), whose sum is σ = 80851634688. Its totient is φ = 48496320000.

The previous prime is 63539000893. The next prime is 63539001007. The reversal of 63539000987 is 78900093536.

It is a cyclic number.

It is not a de Polignac number, because 63539000987 - 2¹⁴ = 63538984603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63539000587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1103912 + ... + 1160042.

It is an arithmetic number, because the mean of its divisors is an integer number (2526613584).

Almost surely, 2^63539000987 is an apocalyptic number.

63539000987 is the 205814-th pentagonal number.

63539000987 is a deficient number, since it is larger than the sum of its proper divisors (17312633701).

63539000987 is a wasteful number, since it uses less digits than its factorization.

63539000987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56451.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 63539000987 in words is "sixty-three billion, five hundred thirty-nine million, nine hundred eighty-seven", and thus it is an aban number.