21083926633 has 24 divisors (see below), whose sum is σ = 27408465504. Its totient is φ = 16028308800.

The previous prime is 21083926621. The next prime is 21083926663. The reversal of 21083926633 is 33662938012.

It is not a de Polignac number, because 21083926633 - 2²⁵ = 21050372201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21083926633.

It is not an unprimeable number, because it can be changed into a prime (21083926663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454935 + ... + 499132.

It is an arithmetic number, because the mean of its divisors is an integer number (1142019396).

Almost surely, 2^21083926633 is an apocalyptic number.

It is an amenable number.

21083926633 is a deficient number, since it is larger than the sum of its proper divisors (6324538871).

21083926633 is a wasteful number, since it uses less digits than its factorization.

21083926633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954133 (or 954126 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 21083926633 in words is "twenty-one billion, eighty-three million, nine hundred twenty-six thousand, six hundred thirty-three".