5161991600 has 30 divisors (see below), whose sum is σ = 12401685780. Its totient is φ = 2064796480.

The previous prime is 5161991519. The next prime is 5161991603. The reversal of 5161991600 is 61991615.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5161991603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6452090 + ... + 6452889.

It is an arithmetic number, because the mean of its divisors is an integer number (413389526).

Almost surely, 2^5161991600 is an apocalyptic number.

5161991600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5161991600 is an abundant number, since it is smaller than the sum of its proper divisors (7239694180).

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

5161991600 is a wasteful number, since it uses less digits than its factorization.

5161991600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12904997 (or 12904986 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 5161991600 is about 71847.0013292135. The cubic root of 5161991600 is about 1728.2468122396.

The spelling of 5161991600 in words is "five billion, one hundred sixty-one million, nine hundred ninety-one thousand, six hundred".