53499574656 has 320 divisors, whose sum is σ = 176160821760. Its totient is φ = 15981235200.

The previous prime is 53499574591. The next prime is 53499574657. The reversal of 53499574656 is 65647599435.

53499574656 is a `hidden beast` number, since 5 + 3 + 4 + 9 + 9 + 574 + 6 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 53499574593 and 53499574602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53499574657) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8094105 + ... + 8100711.

It is an arithmetic number, because the mean of its divisors is an integer number (550502568).

Almost surely, 2^53499574656 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 53499574656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88080410880).

53499574656 is an abundant number, since it is smaller than the sum of its proper divisors (122661247104).

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

53499574656 is a wasteful number, since it uses less digits than its factorization.

53499574656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715 (or 6694 counting only the distinct ones).

The product of its digits is 122472000, while the sum is 63.

The spelling of 53499574656 in words is "fifty-three billion, four hundred ninety-nine million, five hundred seventy-four thousand, six hundred fifty-six".