21850573341 has 4 divisors (see below), whose sum is σ = 29134097792. Its totient is φ = 14567048892.

The previous prime is 21850573337. The next prime is 21850573351. The reversal of 21850573341 is 14337505812.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21850573341 - 2² = 21850573337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21850573341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21850573351) 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, 3641762221 + ... + 3641762226.

It is an arithmetic number, because the mean of its divisors is an integer number (7283524448).

Almost surely, 2^21850573341 is an apocalyptic number.

It is an amenable number.

21850573341 is a deficient number, since it is larger than the sum of its proper divisors (7283524451).

21850573341 is an equidigital number, since it uses as much as digits as its factorization.

21850573341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7283524450.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 21850573341 in words is "twenty-one billion, eight hundred fifty million, five hundred seventy-three thousand, three hundred forty-one".