63515714647 has 32 divisors (see below), whose sum is σ = 80546955264. Its totient is φ = 48646936800.

The previous prime is 63515714629. The next prime is 63515714663. The reversal of 63515714647 is 74641751536.

It is a happy number.

It is not a de Polignac number, because 63515714647 - 2¹⁹ = 63515190359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63515714647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63515714617) 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, 2375322 + ... + 2401912.

It is an arithmetic number, because the mean of its divisors is an integer number (2517092352).

Almost surely, 2^63515714647 is an apocalyptic number.

63515714647 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

63515714647 is a deficient number, since it is larger than the sum of its proper divisors (17031240617).

63515714647 is a wasteful number, since it uses less digits than its factorization.

63515714647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27139.

The product of its digits is 2116800, while the sum is 49.

The spelling of 63515714647 in words is "sixty-three billion, five hundred fifteen million, seven hundred fourteen thousand, six hundred forty-seven".