5111645856 has 48 divisors (see below), whose sum is σ = 14001470784. Its totient is φ = 1629799424.

The previous prime is 5111645843. The next prime is 5111645887. The reversal of 5111645856 is 6585461115.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×5111645856² = 52257846714323945472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155321 + ... + 1159736.

It is an arithmetic number, because the mean of its divisors is an integer number (291697308).

Almost surely, 2^5111645856 is an apocalyptic number.

It is an amenable number.

5111645856 is an abundant number, since it is smaller than the sum of its proper divisors (8889824928).

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

5111645856 is a wasteful number, since it uses less digits than its factorization.

5111645856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315093 (or 2315085 counting only the distinct ones).

The product of its digits is 144000, while the sum is 42.

The square root of 5111645856 is about 71495.7750919591. The cubic root of 5111645856 is about 1722.6098220413.

The spelling of 5111645856 in words is "five billion, one hundred eleven million, six hundred forty-five thousand, eight hundred fifty-six".