21373966483 has 16 divisors (see below), whose sum is σ = 22207610880. Its totient is φ = 20546973216.

The previous prime is 21373966433. The next prime is 21373966487. The reversal of 21373966483 is 38466937312.

It is a cyclic number.

It is not a de Polignac number, because 21373966483 - 2¹⁷ = 21373835411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21373966483.

It is not an unprimeable number, because it can be changed into a prime (21373966487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8073466 + ... + 8076112.

It is an arithmetic number, because the mean of its divisors is an integer number (1387975680).

Almost surely, 2^21373966483 is an apocalyptic number.

21373966483 is a deficient number, since it is larger than the sum of its proper divisors (833644397).

21373966483 is a wasteful number, since it uses less digits than its factorization.

21373966483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786.

The product of its digits is 3919104, while the sum is 52.

The spelling of 21373966483 in words is "twenty-one billion, three hundred seventy-three million, nine hundred sixty-six thousand, four hundred eighty-three".