21337945741 has 16 divisors (see below), whose sum is σ = 25297251840. Its totient is φ = 17617691520.

The previous prime is 21337945721. The next prime is 21337945751. The reversal of 21337945741 is 14754973312.

It is a cyclic number.

It is not a de Polignac number, because 21337945741 - 2⁷ = 21337945613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21337945691 and 21337945700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21337945721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447886 + ... + 493231.

It is an arithmetic number, because the mean of its divisors is an integer number (1581078240).

Almost surely, 2^21337945741 is an apocalyptic number.

It is an amenable number.

21337945741 is a deficient number, since it is larger than the sum of its proper divisors (3959306099).

21337945741 is an equidigital number, since it uses as much as digits as its factorization.

21337945741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941244.

The product of its digits is 635040, while the sum is 46.

The spelling of 21337945741 in words is "twenty-one billion, three hundred thirty-seven million, nine hundred forty-five thousand, seven hundred forty-one".