21362802694 has 4 divisors (see below), whose sum is σ = 32044204044. Its totient is φ = 10681401346.

The previous prime is 21362802649. The next prime is 21362802719. The reversal of 21362802694 is 49620826312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21362802694.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5340700672 + ... + 5340700675.

It is an arithmetic number, because the mean of its divisors is an integer number (8011051011).

Almost surely, 2^21362802694 is an apocalyptic number.

21362802694 is a deficient number, since it is larger than the sum of its proper divisors (10681401350).

21362802694 is a wasteful number, since it uses less digits than its factorization.

21362802694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10681401349.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 21362802694 in words is "twenty-one billion, three hundred sixty-two million, eight hundred two thousand, six hundred ninety-four".