21262339093 has 8 divisors (see below), whose sum is σ = 22516795800. Its totient is φ = 20008296960.

The previous prime is 21262339073. The next prime is 21262339141. The reversal of 21262339093 is 39093326212.

It can be written as a sum of positive squares in 4 ways, for example, as 1640493009 + 19621846084 = 40503^2 + 140078^2 .

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 21262339093 - 2³³ = 12672404501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21262339003) 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, 5233 + ... + 206281.

It is an arithmetic number, because the mean of its divisors is an integer number (2814599475).

Almost surely, 2^21262339093 is an apocalyptic number.

It is an amenable number.

21262339093 is a deficient number, since it is larger than the sum of its proper divisors (1254456707).

21262339093 is a wasteful number, since it uses less digits than its factorization.

21262339093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207287.

The product of its (nonzero) digits is 104976, while the sum is 40.

The spelling of 21262339093 in words is "twenty-one billion, two hundred sixty-two million, three hundred thirty-nine thousand, ninety-three".