5091156720 has 320 divisors, whose sum is σ = 19708738560. Its totient is φ = 1198568448.

The previous prime is 5091156703. The next prime is 5091156737. The reversal of 5091156720 is 276511905.

5091156720 is a `hidden beast` number, since 5 + 0 + 91 + 1 + 567 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (5091156703) and next prime (5091156737).

It is a super-3 number, since 3×5091156720³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 641899 + ... + 649781.

It is an arithmetic number, because the mean of its divisors is an integer number (61589808).

Almost surely, 2^5091156720 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 5091156720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9854369280).

5091156720 is an abundant number, since it is smaller than the sum of its proper divisors (14617581840).

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

5091156720 is a wasteful number, since it uses less digits than its factorization.

5091156720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7941 (or 7929 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 5091156720 is about 71352.3420778884. The cubic root of 5091156720 is about 1720.3051468700.

The spelling of 5091156720 in words is "five billion, ninety-one million, one hundred fifty-six thousand, seven hundred twenty".