21363133846 has 4 divisors (see below), whose sum is σ = 32044700772. Its totient is φ = 10681566922.

The previous prime is 21363133811. The next prime is 21363133859. The reversal of 21363133846 is 64833136312.

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

It is a super-2 number, since 2×21363133846² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21363133799 and 21363133808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5340783460 + ... + 5340783463.

It is an arithmetic number, because the mean of its divisors is an integer number (8011175193).

Almost surely, 2^21363133846 is an apocalyptic number.

21363133846 is a deficient number, since it is larger than the sum of its proper divisors (10681566926).

21363133846 is a wasteful number, since it uses less digits than its factorization.

21363133846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10681566925.

The product of its digits is 186624, while the sum is 40.

The spelling of 21363133846 in words is "twenty-one billion, three hundred sixty-three million, one hundred thirty-three thousand, eight hundred forty-six".