19603521042 has 48 divisors (see below), whose sum is σ = 45621869760. Its totient is φ = 5599326432.

The previous prime is 19603521029. The next prime is 19603521079. The reversal of 19603521042 is 24012530691.

It is a junction number, because it is equal to n+sod(n) for n = 19603520994 and 19603521012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1235443 + ... + 1251209.

It is an arithmetic number, because the mean of its divisors is an integer number (950455620).

Almost surely, 2^19603521042 is an apocalyptic number.

19603521042 is an abundant number, since it is smaller than the sum of its proper divisors (26018348718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19603521042 is a wasteful number, since it uses less digits than its factorization.

19603521042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20015 (or 20008 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 19603521042 in words is "nineteen billion, six hundred three million, five hundred twenty-one thousand, forty-two".