21923974741 has 8 divisors (see below), whose sum is σ = 24014090520. Its totient is φ = 19922800128.

The previous prime is 21923974729. The next prime is 21923974759. The reversal of 21923974741 is 14747932912.

It can be written as a sum of positive squares in 4 ways, for example, as 10971515025 + 10952459716 = 104745^2 + 104654^2 .

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 21923974741 - 2¹⁹ = 21923450453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21923974841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22234776 + ... + 22235761.

It is an arithmetic number, because the mean of its divisors is an integer number (3001761315).

Almost surely, 2^21923974741 is an apocalyptic number.

It is an amenable number.

21923974741 is a deficient number, since it is larger than the sum of its proper divisors (2090115779).

21923974741 is a wasteful number, since it uses less digits than its factorization.

21923974741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44470583.

The product of its digits is 762048, while the sum is 49.

The spelling of 21923974741 in words is "twenty-one billion, nine hundred twenty-three million, nine hundred seventy-four thousand, seven hundred forty-one".