19992476545 has 8 divisors (see below), whose sum is σ = 24548901696. Its totient is φ = 15622028016.

The previous prime is 19992476531. The next prime is 19992476549. The reversal of 19992476545 is 54567429991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19992476545 - 2¹¹ = 19992474497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19992476549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46493917 + ... + 46494346.

It is an arithmetic number, because the mean of its divisors is an integer number (3068612712).

Almost surely, 2^19992476545 is an apocalyptic number.

It is an amenable number.

19992476545 is a deficient number, since it is larger than the sum of its proper divisors (4556425151).

19992476545 is an equidigital number, since it uses as much as digits as its factorization.

19992476545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92988311.

The product of its digits is 24494400, while the sum is 61.

The spelling of 19992476545 in words is "nineteen billion, nine hundred ninety-two million, four hundred seventy-six thousand, five hundred forty-five".