53188720704 has 756 divisors, whose sum is σ = 191755811052. Its totient is φ = 14039101440.

The previous prime is 53188720649. The next prime is 53188720733. The reversal of 53188720704 is 40702788135.

It can be written as a sum of positive squares in 2 ways, for example, as 43397222400 + 9791498304 = 208320^2 + 98952^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53188720704.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1003560742 + ... + 1003560794.

Almost surely, 2^53188720704 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 53188720704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95877905526).

53188720704 is an abundant number, since it is smaller than the sum of its proper divisors (138567090348).

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

53188720704 is a wasteful number, since it uses less digits than its factorization.

53188720704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 53188720704 in words is "fifty-three billion, one hundred eighty-eight million, seven hundred twenty thousand, seven hundred four".