21903033215 has 64 divisors (see below), whose sum is σ = 31049256960. Its totient is φ = 14525222400.

The previous prime is 21903033211. The next prime is 21903033241. The reversal of 21903033215 is 51233030912.

It is not a de Polignac number, because 21903033215 - 2² = 21903033211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21903033211) 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 63 ways as a sum of consecutive naturals, for example, 29880989 + ... + 29881721.

It is an arithmetic number, because the mean of its divisors is an integer number (485144640).

Almost surely, 2^21903033215 is an apocalyptic number.

21903033215 is a deficient number, since it is larger than the sum of its proper divisors (9146223745).

21903033215 is a wasteful number, since it uses less digits than its factorization.

21903033215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

The product of its (nonzero) digits is 4860, while the sum is 29.

The spelling of 21903033215 in words is "twenty-one billion, nine hundred three million, thirty-three thousand, two hundred fifteen".