21348684803 has 2 divisors, whose sum is σ = 21348684804. Its totient is φ = 21348684802.

The previous prime is 21348684787. The next prime is 21348684809. The reversal of 21348684803 is 30848684312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21348684803 - 2⁴ = 21348684787 is a prime.

It is not a weakly prime, because it can be changed into another prime (21348684809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10674342401 + 10674342402.

It is an arithmetic number, because the mean of its divisors is an integer number (10674342402).

Almost surely, 2^21348684803 is an apocalyptic number.

21348684803 is a deficient number, since it is larger than the sum of its proper divisors (1).

21348684803 is an equidigital number, since it uses as much as digits as its factorization.

21348684803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 21348684803 in words is "twenty-one billion, three hundred forty-eight million, six hundred eighty-four thousand, eight hundred three".