65563220634 has 8 divisors (see below), whose sum is σ = 131126441280. Its totient is φ = 21854406876.

The previous prime is 65563220609. The next prime is 65563220659. The reversal of 65563220634 is 43602236556.

It is an interprime number because it is at equal distance from previous prime (65563220609) and next prime (65563220659).

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

65563220634 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5463601714 + ... + 5463601725.

It is an arithmetic number, because the mean of its divisors is an integer number (16390805160).

Almost surely, 2^65563220634 is an apocalyptic number.

65563220634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65563220634 is a wasteful number, since it uses less digits than its factorization.

65563220634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10927203444.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 65563220634 in words is "sixty-five billion, five hundred sixty-three million, two hundred twenty thousand, six hundred thirty-four".