5215746816 has 180 divisors, whose sum is σ = 17774681232. Its totient is φ = 1490171904.

The previous prime is 5215746803. The next prime is 5215746827. The reversal of 5215746816 is 6186475125.

5215746816 is a `hidden beast` number, since 5 + 2 + 1 + 574 + 68 + 16 = 666.

It is a super-2 number, since 2×5215746816² = 54408029697228275712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 127186 + ... + 163118.

Almost surely, 2^5215746816 is an apocalyptic number.

5215746816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5215746816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8887340616).

5215746816 is an abundant number, since it is smaller than the sum of its proper divisors (12558934416).

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

5215746816 is an equidigital number, since it uses as much as digits as its factorization.

5215746816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35968 (or 35945 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 5215746816 is about 72220.1274991951. The cubic root of 5215746816 is about 1734.2252314560.

The spelling of 5215746816 in words is "five billion, two hundred fifteen million, seven hundred forty-six thousand, eight hundred sixteen".