53645220648 has 64 divisors (see below), whose sum is σ = 151113340800. Its totient is φ = 17629879680.

The previous prime is 53645220637. The next prime is 53645220661. The reversal of 53645220648 is 84602254635.

53645220648 is a `hidden beast` number, since 5 + 3 + 64 + 522 + 0 + 64 + 8 = 666.

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, 1733661 + ... + 1764332.

It is an arithmetic number, because the mean of its divisors is an integer number (2361145950).

Almost surely, 2^53645220648 is an apocalyptic number.

It is an amenable number.

53645220648 is an abundant number, since it is smaller than the sum of its proper divisors (97468120152).

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

53645220648 is a wasteful number, since it uses less digits than its factorization.

53645220648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498079 (or 3498069 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 53645220648 in words is "fifty-three billion, six hundred forty-five million, two hundred twenty thousand, six hundred forty-eight".