21023402093 has 8 divisors (see below), whose sum is σ = 22134546720. Its totient is φ = 19912722480.

The previous prime is 21023402077. The next prime is 21023402119. The reversal of 21023402093 is 39020432012.

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 21023402093 - 2⁴ = 21023402077 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 (21023402033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21455 + ... + 206172.

It is an arithmetic number, because the mean of its divisors is an integer number (2766818340).

Almost surely, 2^21023402093 is an apocalyptic number.

It is an amenable number.

21023402093 is a deficient number, since it is larger than the sum of its proper divisors (1111144627).

21023402093 is a wasteful number, since it uses less digits than its factorization.

21023402093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232507.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 21023402093 in words is "twenty-one billion, twenty-three million, four hundred two thousand, ninety-three".