5491296720 has 720 divisors, whose sum is σ = 23902845120. Its totient is φ = 1154829312.

The previous prime is 5491296719. The next prime is 5491296737. The reversal of 5491296720 is 276921945.

5491296720 is a `hidden beast` number, since 5 + 491 + 2 + 96 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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 143 ways as a sum of consecutive naturals, for example, 17886807 + ... + 17887113.

It is an arithmetic number, because the mean of its divisors is an integer number (33198396).

Almost surely, 2^5491296720 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 5491296720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11951422560).

5491296720 is an abundant number, since it is smaller than the sum of its proper divisors (18411548400).

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

5491296720 is a wasteful number, since it uses less digits than its factorization.

5491296720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 5491296720 is about 74103.2841377493. The cubic root of 5491296720 is about 1764.2425970204.

The spelling of 5491296720 in words is "five billion, four hundred ninety-one million, two hundred ninety-six thousand, seven hundred twenty".