5128700015 has 4 divisors (see below), whose sum is σ = 6154440024. Its totient is φ = 4102960008.

The previous prime is 5128699991. The next prime is 5128700053. The reversal of 5128700015 is 5100078215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5100078215 = 5 ⋅1020015643.

It is a cyclic number.

It is not a de Polignac number, because 5128700015 - 2⁶ = 5128699951 is a prime.

It is a super-2 number, since 2×5128700015² = 52607127687722000450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512869997 + ... + 512870006.

It is an arithmetic number, because the mean of its divisors is an integer number (1538610006).

Almost surely, 2^5128700015 is an apocalyptic number.

5128700015 is a deficient number, since it is larger than the sum of its proper divisors (1025740009).

5128700015 is a wasteful number, since it uses less digits than its factorization.

5128700015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025740008.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 5128700015 is about 71614.9426795833. The cubic root of 5128700015 is about 1724.5234295053.

The spelling of 5128700015 in words is "five billion, one hundred twenty-eight million, seven hundred thousand, fifteen".