53297945064 has 288 divisors, whose sum is σ = 179372793600. Its totient is φ = 13998666240.

The previous prime is 53297945053. The next prime is 53297945089. The reversal of 53297945064 is 46054979235.

53297945064 is a `hidden beast` number, since 532 + 9 + 7 + 9 + 45 + 0 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 53297945064.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23081542 + ... + 23083850.

It is an arithmetic number, because the mean of its divisors is an integer number (622822200).

Almost surely, 2^53297945064 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 53297945064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89686396800).

53297945064 is an abundant number, since it is smaller than the sum of its proper divisors (126074848536).

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

53297945064 is a wasteful number, since it uses less digits than its factorization.

53297945064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 53297945064 in words is "fifty-three billion, two hundred ninety-seven million, nine hundred forty-five thousand, sixty-four".