5117997998 has 8 divisors (see below), whose sum is σ = 7677356808. Its totient is φ = 2558879064.

The previous prime is 5117997971. The next prime is 5117998013. The reversal of 5117997998 is 8997997115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9440 + ... + 101612.

It is an arithmetic number, because the mean of its divisors is an integer number (959669601).

Almost surely, 2^5117997998 is an apocalyptic number.

5117997998 is a deficient number, since it is larger than the sum of its proper divisors (2559358810).

5117997998 is a wasteful number, since it uses less digits than its factorization.

5117997998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119938.

The product of its digits is 12859560, while the sum is 65.

The square root of 5117997998 is about 71540.1844979449. The cubic root of 5117997998 is about 1723.3230778143.

The spelling of 5117997998 in words is "five billion, one hundred seventeen million, nine hundred ninety-seven thousand, nine hundred ninety-eight".