53909360994816 has 320 divisors, whose sum is σ = 169306724568960. Its totient is φ = 16878259077120.

The previous prime is 53909360994803. The next prime is 53909360994851. The reversal of 53909360994816 is 61849906390935.

53909360994816 is a `hidden beast` number, since 5 + 3 + 9 + 0 + 9 + 3 + 609 + 9 + 4 + 8 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115155330 + ... + 115622526.

It is an arithmetic number, because the mean of its divisors is an integer number (529083514278).

Almost surely, 2^{53909360994816} 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 53909360994816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84653362284480).

53909360994816 is an abundant number, since it is smaller than the sum of its proper divisors (115397363574144).

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

53909360994816 is a wasteful number, since it uses less digits than its factorization.

53909360994816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467732 (or 467710 counting only the distinct ones).

The product of its (nonzero) digits is 340122240, while the sum is 72.

The spelling of 53909360994816 in words is "fifty-three trillion, nine hundred nine billion, three hundred sixty million, nine hundred ninety-four thousand, eight hundred sixteen".