21834492973 has 8 divisors (see below), whose sum is σ = 22824135680. Its totient is φ = 20862681840.

The previous prime is 21834492959. The next prime is 21834492983. The reversal of 21834492973 is 37929443812.

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 21834492973 - 2²⁵ = 21800938541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21834492973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21834492923) 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, 4455390 + ... + 4460287.

It is an arithmetic number, because the mean of its divisors is an integer number (2853016960).

Almost surely, 2^21834492973 is an apocalyptic number.

It is an amenable number.

21834492973 is a deficient number, since it is larger than the sum of its proper divisors (989642707).

21834492973 is an equidigital number, since it uses as much as digits as its factorization.

21834492973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915787.

The product of its digits is 2612736, while the sum is 52.

The spelling of 21834492973 in words is "twenty-one billion, eight hundred thirty-four million, four hundred ninety-two thousand, nine hundred seventy-three".