21933340015 has 8 divisors (see below), whose sum is σ = 26398110960. Its totient is φ = 17494603392.

The previous prime is 21933339949. The next prime is 21933340021. The reversal of 21933340015 is 51004333912.

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 21933340015 - 2⁷ = 21933339887 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6506725 + ... + 6510094.

It is an arithmetic number, because the mean of its divisors is an integer number (3299763870).

Almost surely, 2^21933340015 is an apocalyptic number.

21933340015 is a deficient number, since it is larger than the sum of its proper divisors (4464770945).

21933340015 is a wasteful number, since it uses less digits than its factorization.

21933340015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13017161.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 21933340015 its reverse (51004333912), we get a palindrome (72937673927).

The spelling of 21933340015 in words is "twenty-one billion, nine hundred thirty-three million, three hundred forty thousand, fifteen".