5251921455960 has 256 divisors, whose sum is σ = 18288861696000. Its totient is φ = 1339004528640.

The previous prime is 5251921455931. The next prime is 5251921456057. The reversal of 5251921455960 is 695541291525.

5251921455960 is a `hidden beast` number, since 5 + 2 + 5 + 1 + 9 + 2 + 1 + 45 + 596 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 5251921455897 and 5251921455906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1833856 + ... + 3723824.

It is an arithmetic number, because the mean of its divisors is an integer number (71440866000).

Almost surely, 2^{5251921455960} 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 5251921455960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9144430848000).

5251921455960 is an abundant number, since it is smaller than the sum of its proper divisors (13036940240040).

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

5251921455960 is a wasteful number, since it uses less digits than its factorization.

5251921455960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890103 (or 1890093 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 5251921455960 in words is "five trillion, two hundred fifty-one billion, nine hundred twenty-one million, four hundred fifty-five thousand, nine hundred sixty".