21460233783 has 4 divisors (see below), whose sum is σ = 28613645048. Its totient is φ = 14306822520.

The previous prime is 21460233671. The next prime is 21460233787. The reversal of 21460233783 is 38733206412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21460233783 - 2¹⁸ = 21459971639 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 (21460233787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3576705628 + ... + 3576705633.

It is an arithmetic number, because the mean of its divisors is an integer number (7153411262).

Almost surely, 2^21460233783 is an apocalyptic number.

21460233783 is a deficient number, since it is larger than the sum of its proper divisors (7153411265).

21460233783 is an equidigital number, since it uses as much as digits as its factorization.

21460233783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7153411264.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 21460233783 in words is "twenty-one billion, four hundred sixty million, two hundred thirty-three thousand, seven hundred eighty-three".