63487700187 has 4 divisors (see below), whose sum is σ = 84650266920. Its totient is φ = 42325133456.

The previous prime is 63487700141. The next prime is 63487700197. The reversal of 63487700187 is 78100778436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63487700187 - 2⁸ = 63487699931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63487700117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10581283362 + ... + 10581283367.

It is an arithmetic number, because the mean of its divisors is an integer number (21162566730).

Almost surely, 2^63487700187 is an apocalyptic number.

63487700187 is a deficient number, since it is larger than the sum of its proper divisors (21162566733).

63487700187 is a wasteful number, since it uses less digits than its factorization.

63487700187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21162566732.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 63487700187 in words is "sixty-three billion, four hundred eighty-seven million, seven hundred thousand, one hundred eighty-seven".