5081999994 has 16 divisors (see below), whose sum is σ = 11293333440. Its totient is φ = 1693999980.

The previous prime is 5081999981. The next prime is 5082000013. The reversal of 5081999994 is 4999991805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47055502 + ... + 47055609.

It is an arithmetic number, because the mean of its divisors is an integer number (705833340).

Almost surely, 2^5081999994 is an apocalyptic number.

5081999994 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

5081999994 is an abundant number, since it is smaller than the sum of its proper divisors (6211333446).

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

5081999994 is a wasteful number, since it uses less digits than its factorization.

5081999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94111122 (or 94111116 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 63.

The square root of 5081999994 is about 71288.1476404037. The cubic root of 5081999994 is about 1719.2731733905.

The spelling of 5081999994 in words is "five billion, eighty-one million, nine hundred ninety-nine thousand, nine hundred ninety-four".