21807193083 has 16 divisors (see below), whose sum is σ = 31512346656. Its totient is φ = 13334330880.

The previous prime is 21807193061. The next prime is 21807193091. The reversal of 21807193083 is 38039170812.

It is not a de Polignac number, because 21807193083 - 2¹² = 21807188987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21807193033) 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 15 ways as a sum of consecutive naturals, for example, 1774638 + ... + 1786883.

It is an arithmetic number, because the mean of its divisors is an integer number (1969521666).

Almost surely, 2^21807193083 is an apocalyptic number.

21807193083 is a deficient number, since it is larger than the sum of its proper divisors (9705153573).

21807193083 is a wasteful number, since it uses less digits than its factorization.

21807193083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561694.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 21807193083 in words is "twenty-one billion, eight hundred seven million, one hundred ninety-three thousand, eighty-three".