21333045415 has 16 divisors (see below), whose sum is σ = 28681679520. Its totient is φ = 15095617920.

The previous prime is 21333045413. The next prime is 21333045443. The reversal of 21333045415 is 51454033312.

It is not a de Polignac number, because 21333045415 - 2¹ = 21333045413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333045413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5239500 + ... + 5243569.

It is an arithmetic number, because the mean of its divisors is an integer number (1792604970).

Almost surely, 2^21333045415 is an apocalyptic number.

21333045415 is a deficient number, since it is larger than the sum of its proper divisors (7348634105).

21333045415 is a wasteful number, since it uses less digits than its factorization.

21333045415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483122.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 21333045415 its reverse (51454033312), we get a palindrome (72787078727).

The spelling of 21333045415 in words is "twenty-one billion, three hundred thirty-three million, forty-five thousand, four hundred fifteen".