5127779817 has 16 divisors (see below), whose sum is σ = 7604064000. Its totient is φ = 3415210992.

The previous prime is 5127779803. The next prime is 5127779837. The reversal of 5127779817 is 7189777215.

It is not a de Polignac number, because 5127779817 - 2⁶ = 5127779753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5127779837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63342 + ... + 119447.

It is an arithmetic number, because the mean of its divisors is an integer number (475254000).

Almost surely, 2^5127779817 is an apocalyptic number.

It is an amenable number.

5127779817 is a deficient number, since it is larger than the sum of its proper divisors (2476284183).

5127779817 is a wasteful number, since it uses less digits than its factorization.

5127779817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183837 (or 183831 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 54.

The square root of 5127779817 is about 71608.5177684890. The cubic root of 5127779817 is about 1724.4202845937.

The spelling of 5127779817 in words is "five billion, one hundred twenty-seven million, seven hundred seventy-nine thousand, eight hundred seventeen".