19776045724 has 12 divisors (see below), whose sum is σ = 34619452000. Its totient is φ = 9884773728.

The previous prime is 19776045703. The next prime is 19776045727. The reversal of 19776045724 is 42754067791.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19776045727) 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 3 ways as a sum of consecutive naturals, for example, 798564 + ... + 822955.

Almost surely, 2^19776045724 is an apocalyptic number.

It is an amenable number.

19776045724 is a deficient number, since it is larger than the sum of its proper divisors (14843406276).

19776045724 is a wasteful number, since it uses less digits than its factorization.

19776045724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624572 (or 1624570 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 19776045724 in words is "nineteen billion, seven hundred seventy-six million, forty-five thousand, seven hundred twenty-four".