20455251333 has 8 divisors (see below), whose sum is σ = 29753092896. Its totient is φ = 12397122000.

The previous prime is 20455251283. The next prime is 20455251449. The reversal of 20455251333 is 33315255402.

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

It is not a de Polignac number, because 20455251333 - 2¹³ = 20455243141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 619856101 = 20455251333 / (2 + 0 + 4 + 5 + 5 + 2 + 5 + 1 + 3 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 20455251294 and 20455251303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455251133) 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 7 ways as a sum of consecutive naturals, for example, 309928018 + ... + 309928083.

It is an arithmetic number, because the mean of its divisors is an integer number (3719136612).

Almost surely, 2^20455251333 is an apocalyptic number.

It is an amenable number.

20455251333 is a deficient number, since it is larger than the sum of its proper divisors (9297841563).

20455251333 is a wasteful number, since it uses less digits than its factorization.

20455251333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619856115.

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 20455251333 in words is "twenty billion, four hundred fifty-five million, two hundred fifty-one thousand, three hundred thirty-three".