12519042436 has 12 divisors (see below), whose sum is σ = 22208438812. Its totient is φ = 6173774208.

The previous prime is 12519042409. The next prime is 12519042491. The reversal of 12519042436 is 63424091521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8632268100 + 3886774336 = 92910^2 + 62344^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12519042395 and 12519042404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21436425 + ... + 21437008.

Almost surely, 2^12519042436 is an apocalyptic number.

It is an amenable number.

12519042436 is a deficient number, since it is larger than the sum of its proper divisors (9689396376).

12519042436 is a wasteful number, since it uses less digits than its factorization.

12519042436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42873510 (or 42873508 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 12519042436 in words is "twelve billion, five hundred nineteen million, forty-two thousand, four hundred thirty-six".