21994387341 has 8 divisors (see below), whose sum is σ = 29326587264. Its totient is φ = 14662556160.

The previous prime is 21994387339. The next prime is 21994387357. The reversal of 21994387341 is 14378349912.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21994387341 - 2¹ = 21994387339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21994387391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110925 + ... + 237261.

It is an arithmetic number, because the mean of its divisors is an integer number (3665823408).

Almost surely, 2^21994387341 is an apocalyptic number.

It is an amenable number.

21994387341 is a deficient number, since it is larger than the sum of its proper divisors (7332199923).

21994387341 is a wasteful number, since it uses less digits than its factorization.

21994387341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184371.

The product of its digits is 1306368, while the sum is 51.

The spelling of 21994387341 in words is "twenty-one billion, nine hundred ninety-four million, three hundred eighty-seven thousand, three hundred forty-one".