53643560634 has 32 divisors (see below), whose sum is σ = 119392237440. Its totient is φ = 17853538176.

The previous prime is 53643560587. The next prime is 53643560657. The reversal of 53643560634 is 43606534635.

53643560634 is a `hidden beast` number, since 5 + 3 + 6 + 4 + 3 + 5 + 6 + 0 + 634 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53643560634.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732759 + ... + 802634.

It is an arithmetic number, because the mean of its divisors is an integer number (3731007420).

Almost surely, 2^53643560634 is an apocalyptic number.

53643560634 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

53643560634 is an abundant number, since it is smaller than the sum of its proper divisors (65748676806).

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

53643560634 is a wasteful number, since it uses less digits than its factorization.

53643560634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536051 (or 1536045 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 45.

The spelling of 53643560634 in words is "fifty-three billion, six hundred forty-three million, five hundred sixty thousand, six hundred thirty-four".