19504412057 has 16 divisors (see below), whose sum is σ = 22872696000. Its totient is φ = 16468329024.

The previous prime is 19504412051. The next prime is 19504412093. The reversal of 19504412057 is 75021440591.

It is a cyclic number.

It is not a de Polignac number, because 19504412057 - 2²² = 19500217753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19504412057.

It is not an unprimeable number, because it can be changed into a prime (19504412051) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1354307 + ... + 1368632.

It is an arithmetic number, because the mean of its divisors is an integer number (1429543500).

Almost surely, 2^19504412057 is an apocalyptic number.

It is an amenable number.

19504412057 is a deficient number, since it is larger than the sum of its proper divisors (3368283943).

19504412057 is a wasteful number, since it uses less digits than its factorization.

19504412057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723000.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 19504412057 in words is "nineteen billion, five hundred four million, four hundred twelve thousand, fifty-seven".