5128612571 has 4 divisors (see below), whose sum is σ = 5139689952. Its totient is φ = 5117535192.

The previous prime is 5128612549. The next prime is 5128612607. The reversal of 5128612571 is 1752168215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5128612571 - 2³⁰ = 4054870747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5128612501) by changing a digit.

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, 5537996 + ... + 5538921.

It is an arithmetic number, because the mean of its divisors is an integer number (1284922488).

Almost surely, 2^5128612571 is an apocalyptic number.

5128612571 is a deficient number, since it is larger than the sum of its proper divisors (11077381).

5128612571 is a wasteful number, since it uses less digits than its factorization.

5128612571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11077380.

The product of its digits is 33600, while the sum is 38.

The square root of 5128612571 is about 71614.3321619353. The cubic root of 5128612571 is about 1724.5136284457.

The spelling of 5128612571 in words is "five billion, one hundred twenty-eight million, six hundred twelve thousand, five hundred seventy-one".