19782955533 has 8 divisors (see below), whose sum is σ = 28775208096. Its totient is φ = 11989670000.

The previous prime is 19782955441. The next prime is 19782955559. The reversal of 19782955533 is 33555928791.

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

It is not a de Polignac number, because 19782955533 - 2¹⁰ = 19782954509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19782955733) 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, 299741718 + ... + 299741783.

It is an arithmetic number, because the mean of its divisors is an integer number (3596901012).

Almost surely, 2^19782955533 is an apocalyptic number.

It is an amenable number.

19782955533 is a deficient number, since it is larger than the sum of its proper divisors (8992252563).

19782955533 is a wasteful number, since it uses less digits than its factorization.

19782955533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599483515.

The product of its digits is 10206000, while the sum is 57.

The spelling of 19782955533 in words is "nineteen billion, seven hundred eighty-two million, nine hundred fifty-five thousand, five hundred thirty-three".