5157197985 has 8 divisors (see below), whose sum is σ = 8251516800. Its totient is φ = 2750505584.

The previous prime is 5157197971. The next prime is 5157198017. The reversal of 5157197985 is 5897917515.

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

It is a cyclic number.

It is not a de Polignac number, because 5157197985 - 2⁵ = 5157197953 is a prime.

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, 171906585 + ... + 171906614.

It is an arithmetic number, because the mean of its divisors is an integer number (1031439600).

Almost surely, 2^5157197985 is an apocalyptic number.

It is an amenable number.

5157197985 is a deficient number, since it is larger than the sum of its proper divisors (3094318815).

5157197985 is a wasteful number, since it uses less digits than its factorization.

5157197985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343813207.

The product of its digits is 3969000, while the sum is 57.

The square root of 5157197985 is about 71813.6336986230. The cubic root of 5157197985 is about 1727.7116754000.

The spelling of 5157197985 in words is "five billion, one hundred fifty-seven million, one hundred ninety-seven thousand, nine hundred eighty-five".