5199344640 has 616 divisors, whose sum is σ = 21478761600. Its totient is φ = 1182449664.

The previous prime is 5199344621. The next prime is 5199344659. The reversal of 5199344640 is 464439915.

5199344640 is a `hidden beast` number, since 519 + 93 + 4 + 4 + 6 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (5199344621) and next prime (5199344659).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 26127261 + ... + 26127459.

Almost surely, 2^5199344640 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 5199344640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10739380800).

5199344640 is an abundant number, since it is smaller than the sum of its proper divisors (16279416960).

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

5199344640 is an equidigital number, since it uses as much as digits as its factorization.

5199344640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 5199344640 is about 72106.4812620891. The cubic root of 5199344640 is about 1732.4054257702.

The spelling of 5199344640 in words is "five billion, one hundred ninety-nine million, three hundred forty-four thousand, six hundred forty".