21912032263 has 16 divisors (see below), whose sum is σ = 24663398400. Its totient is φ = 19296744480.

The previous prime is 21912032237. The next prime is 21912032267. The reversal of 21912032263 is 36223021912.

It is a cyclic number.

It is not a de Polignac number, because 21912032263 - 2²⁹ = 21375161351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21912032267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191823 + ... + 283936.

It is an arithmetic number, because the mean of its divisors is an integer number (1541462400).

Almost surely, 2^21912032263 is an apocalyptic number.

21912032263 is a deficient number, since it is larger than the sum of its proper divisors (2751366137).

21912032263 is a wasteful number, since it uses less digits than its factorization.

21912032263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475902.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 21912032263 in words is "twenty-one billion, nine hundred twelve million, thirty-two thousand, two hundred sixty-three".