21048092806 has 8 divisors (see below), whose sum is σ = 34000765344. Its totient is φ = 9714504360.

The previous prime is 21048092803. The next prime is 21048092809. The reversal of 21048092806 is 60829084012.

It is an interprime number because it is at equal distance from previous prime (21048092803) and next prime (21048092809).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21048092803) 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, 404770990 + ... + 404771041.

It is an arithmetic number, because the mean of its divisors is an integer number (4250095668).

Almost surely, 2^21048092806 is an apocalyptic number.

21048092806 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21048092806 is a deficient number, since it is larger than the sum of its proper divisors (12952672538).

21048092806 is a wasteful number, since it uses less digits than its factorization.

21048092806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809542046.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 21048092806 in words is "twenty-one billion, forty-eight million, ninety-two thousand, eight hundred six".