5251193664 has 224 divisors, whose sum is σ = 15168798720. Its totient is φ = 1598361600.

The previous prime is 5251193663. The next prime is 5251193671. The reversal of 5251193664 is 4663911525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251193663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12183529 + ... + 12183959.

Almost surely, 2^5251193664 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 5251193664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7584399360).

5251193664 is an abundant number, since it is smaller than the sum of its proper divisors (9917605056).

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

5251193664 is a wasteful number, since it uses less digits than its factorization.

5251193664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 579 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The square root of 5251193664 is about 72465.1203269545. The cubic root of 5251193664 is about 1738.1450333463.

The spelling of 5251193664 in words is "five billion, two hundred fifty-one million, one hundred ninety-three thousand, six hundred sixty-four".