4991975456 has 24 divisors (see below), whose sum is σ = 10583948844. Its totient is φ = 2303988480.

The previous prime is 4991975447. The next prime is 4991975579. The reversal of 4991975456 is 6545791994.

It can be written as a sum of positive squares in 2 ways, for example, as 4531443856 + 460531600 = 67316^2 + 21460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4991975395 and 4991975404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5999555 + ... + 6000386.

Almost surely, 2^4991975456 is an apocalyptic number.

It is an amenable number.

4991975456 is an abundant number, since it is smaller than the sum of its proper divisors (5591973388).

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

4991975456 is a wasteful number, since it uses less digits than its factorization.

4991975456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11999964 (or 11999956 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 59.

The square root of 4991975456 is about 70653.9132391122. The cubic root of 4991975456 is about 1709.0606717094.

The spelling of 4991975456 in words is "four billion, nine hundred ninety-one million, nine hundred seventy-five thousand, four hundred fifty-six".