5157985673 has 4 divisors (see below), whose sum is σ = 5158129428. Its totient is φ = 5157841920.

The previous prime is 5157985667. The next prime is 5157985697. The reversal of 5157985673 is 3765897515.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1068766864 + 4089218809 = 32692^2 + 63947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5157985673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5157985633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31613 + ... + 106373.

It is an arithmetic number, because the mean of its divisors is an integer number (1289532357).

Almost surely, 2^5157985673 is an apocalyptic number.

It is an amenable number.

5157985673 is a deficient number, since it is larger than the sum of its proper divisors (143755).

5157985673 is an equidigital number, since it uses as much as digits as its factorization.

5157985673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143754.

The product of its digits is 7938000, while the sum is 56.

The square root of 5157985673 is about 71819.1177403343. The cubic root of 5157985673 is about 1727.7996319789.

The spelling of 5157985673 in words is "five billion, one hundred fifty-seven million, nine hundred eighty-five thousand, six hundred seventy-three".