19955942033 has 8 divisors (see below), whose sum is σ = 20142493800. Its totient is φ = 19769453568.

The previous prime is 19955942011. The next prime is 19955942081. The reversal of 19955942033 is 33024955991.

It can be written as a sum of positive squares in 4 ways, for example, as 5611807744 + 14344134289 = 74912^2 + 119767^2 .

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 19955942033 - 2⁸ = 19955941777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19955942233) 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, 823985 + ... + 847857.

It is an arithmetic number, because the mean of its divisors is an integer number (2517811725).

Almost surely, 2^19955942033 is an apocalyptic number.

It is an amenable number.

19955942033 is a deficient number, since it is larger than the sum of its proper divisors (186551767).

19955942033 is a wasteful number, since it uses less digits than its factorization.

19955942033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31651.

The product of its (nonzero) digits is 1312200, while the sum is 50.

The spelling of 19955942033 in words is "nineteen billion, nine hundred fifty-five million, nine hundred forty-two thousand, thirty-three".