21960291803 has 4 divisors (see below), whose sum is σ = 22161762480. Its totient is φ = 21758821128.

The previous prime is 21960291791. The next prime is 21960291839. The reversal of 21960291803 is 30819206912.

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

It is a cyclic number.

It is not a de Polignac number, because 21960291803 - 2¹⁸ = 21960029659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21960291103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100735175 + ... + 100735392.

It is an arithmetic number, because the mean of its divisors is an integer number (5540440620).

Almost surely, 2^21960291803 is an apocalyptic number.

21960291803 is a deficient number, since it is larger than the sum of its proper divisors (201470677).

21960291803 is a wasteful number, since it uses less digits than its factorization.

21960291803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201470676.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 21960291803 in words is "twenty-one billion, nine hundred sixty million, two hundred ninety-one thousand, eight hundred three".