8120012534 has 16 divisors (see below), whose sum is σ = 12292382880. Its totient is φ = 4022578560.

The previous prime is 8120012513. The next prime is 8120012561. The reversal of 8120012534 is 4352100218.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835664 + ... + 845324.

It is an arithmetic number, because the mean of its divisors is an integer number (768273930).

Almost surely, 2^8120012534 is an apocalyptic number.

8120012534 is a deficient number, since it is larger than the sum of its proper divisors (4172370346).

8120012534 is a wasteful number, since it uses less digits than its factorization.

8120012534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13495.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 8120012534 is about 90111.1121560488. The cubic root of 8120012534 is about 2009.9514467286.

The spelling of 8120012534 in words is "eight billion, one hundred twenty million, twelve thousand, five hundred thirty-four".