63687418705 has 8 divisors (see below), whose sum is σ = 77126049000. Its totient is φ = 50482503936.

The previous prime is 63687418679. The next prime is 63687418741. The reversal of 63687418705 is 50781478636.

It can be written as a sum of positive squares in 4 ways, for example, as 11356738624 + 52330680081 = 106568^2 + 228759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63687418705 - 2⁵ = 63687418673 is a prime.

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, 58428280 + ... + 58429369.

It is an arithmetic number, because the mean of its divisors is an integer number (9640756125).

Almost surely, 2^63687418705 is an apocalyptic number.

It is an amenable number.

63687418705 is a deficient number, since it is larger than the sum of its proper divisors (13438630295).

63687418705 is a wasteful number, since it uses less digits than its factorization.

63687418705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116857763.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 63687418705 in words is "sixty-three billion, six hundred eighty-seven million, four hundred eighteen thousand, seven hundred five".