21904373083 has 2 divisors, whose sum is σ = 21904373084. Its totient is φ = 21904373082.

The previous prime is 21904373033. The next prime is 21904373093. The reversal of 21904373083 is 38037340912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21904373083 - 2¹³ = 21904364891 is a prime.

It is not a weakly prime, because it can be changed into another prime (21904373033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10952186541 + 10952186542.

It is an arithmetic number, because the mean of its divisors is an integer number (10952186542).

Almost surely, 2^21904373083 is an apocalyptic number.

21904373083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21904373083 is an equidigital number, since it uses as much as digits as its factorization.

21904373083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 21904373083 in words is "twenty-one billion, nine hundred four million, three hundred seventy-three thousand, eighty-three".