12519691946 has 32 divisors (see below), whose sum is σ = 19239752448. Its totient is φ = 6108606400.

The previous prime is 12519691903. The next prime is 12519691957. The reversal of 12519691946 is 64919691521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11350031 + ... + 11351133.

It is an arithmetic number, because the mean of its divisors is an integer number (601242264).

Almost surely, 2^12519691946 is an apocalyptic number.

12519691946 is a deficient number, since it is larger than the sum of its proper divisors (6720060502).

12519691946 is a wasteful number, since it uses less digits than its factorization.

12519691946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966.

The product of its digits is 1049760, while the sum is 53.

The spelling of 12519691946 in words is "twelve billion, five hundred nineteen million, six hundred ninety-one thousand, nine hundred forty-six".