21619293341 has 4 divisors (see below), whose sum is σ = 21620363772. Its totient is φ = 21618222912.

The previous prime is 21619293337. The next prime is 21619293379. The reversal of 21619293341 is 14339291612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21016590841 + 602702500 = 144971^2 + 24550^2 .

It is a cyclic number.

It is not a de Polignac number, because 21619293341 - 2² = 21619293337 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21619293331) 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, 504326 + ... + 545511.

It is an arithmetic number, because the mean of its divisors is an integer number (5405090943).

Almost surely, 2^21619293341 is an apocalyptic number.

It is an amenable number.

21619293341 is a deficient number, since it is larger than the sum of its proper divisors (1070431).

21619293341 is a wasteful number, since it uses less digits than its factorization.

21619293341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070430.

The product of its digits is 69984, while the sum is 41.

The spelling of 21619293341 in words is "twenty-one billion, six hundred nineteen million, two hundred ninety-three thousand, three hundred forty-one".