12151515434 has 64 divisors (see below), whose sum is σ = 19735971840. Its totient is φ = 5598331200.

The previous prime is 12151515433. The next prime is 12151515443. The reversal of 12151515434 is 43451515121.

It is a self number, because there is not a number n which added to its sum of digits gives 12151515434.

It is not an unprimeable number, because it can be changed into a prime (12151515433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32061857 + ... + 32062235.

It is an arithmetic number, because the mean of its divisors is an integer number (308374560).

Almost surely, 2^12151515434 is an apocalyptic number.

12151515434 is a deficient number, since it is larger than the sum of its proper divisors (7584456406).

12151515434 is a wasteful number, since it uses less digits than its factorization.

12151515434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its digits is 12000, while the sum is 32.

The spelling of 12151515434 in words is "twelve billion, one hundred fifty-one million, five hundred fifteen thousand, four hundred thirty-four".