21033677293 has 16 divisors (see below), whose sum is σ = 22913064000. Its totient is φ = 19232059392.

The previous prime is 21033677263. The next prime is 21033677297. The reversal of 21033677293 is 39277633012.

It is a cyclic number.

It is not a de Polignac number, because 21033677293 - 2²⁵ = 21000122861 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 (21033677297) 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, 1828546 + ... + 1840012.

It is an arithmetic number, because the mean of its divisors is an integer number (1432066500).

Almost surely, 2^21033677293 is an apocalyptic number.

It is an amenable number.

21033677293 is a deficient number, since it is larger than the sum of its proper divisors (1879386707).

21033677293 is a wasteful number, since it uses less digits than its factorization.

21033677293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14844.

The product of its (nonzero) digits is 285768, while the sum is 43.

The spelling of 21033677293 in words is "twenty-one billion, thirty-three million, six hundred seventy-seven thousand, two hundred ninety-three".