4991057040 has 160 divisors (see below), whose sum is σ = 16666361856. Its totient is φ = 1231971840.

The previous prime is 4991056981. The next prime is 4991057053. The reversal of 4991057040 is 407501994.

It is a self number, because there is not a number n which added to its sum of digits gives 4991057040.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156537 + ... + 185703.

Almost surely, 2^4991057040 is an apocalyptic number.

4991057040 is a gapful number since it is divisible by the number (40) 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 4991057040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8333180928).

4991057040 is an abundant number, since it is smaller than the sum of its proper divisors (11675304816).

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

4991057040 is a wasteful number, since it uses less digits than its factorization.

4991057040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29237 (or 29231 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 4991057040 is about 70647.4135407659. The cubic root of 4991057040 is about 1708.9558551594.

The spelling of 4991057040 in words is "four billion, nine hundred ninety-one million, fifty-seven thousand, forty".