5112111647 has 4 divisors (see below), whose sum is σ = 5112430416. Its totient is φ = 5111792880.

The previous prime is 5112111611. The next prime is 5112111659. The reversal of 5112111647 is 7461112115.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5112111647 is a prime.

It is a super-2 number, since 2×5112111647² = 52267370982786105218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5112111607) 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, 133979 + ... + 167852.

It is an arithmetic number, because the mean of its divisors is an integer number (1278107604).

Almost surely, 2^5112111647 is an apocalyptic number.

5112111647 is a deficient number, since it is larger than the sum of its proper divisors (318769).

5112111647 is a wasteful number, since it uses less digits than its factorization.

5112111647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318768.

The product of its digits is 1680, while the sum is 29.

The square root of 5112111647 is about 71499.0324899575. The cubic root of 5112111647 is about 1722.6621438573.

The spelling of 5112111647 in words is "five billion, one hundred twelve million, one hundred eleven thousand, six hundred forty-seven".