53653731648 has 112 divisors (see below), whose sum is σ = 156368349696. Its totient is φ = 16100789760.

The previous prime is 53653731623. The next prime is 53653731667. The reversal of 53653731648 is 84613735635.

It is a self number, because there is not a number n which added to its sum of digits gives 53653731648.

It is a congruent number.

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, 94215 + ... + 340857.

Almost surely, 2^53653731648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53653731648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78184174848).

53653731648 is an abundant number, since it is smaller than the sum of its proper divisors (102714618048).

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

53653731648 is a wasteful number, since it uses less digits than its factorization.

53653731648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246772 (or 246762 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 51.

The spelling of 53653731648 in words is "fifty-three billion, six hundred fifty-three million, seven hundred thirty-one thousand, six hundred forty-eight".