21788541083 has 2 divisors, whose sum is σ = 21788541084. Its totient is φ = 21788541082.

The previous prime is 21788540981. The next prime is 21788541091. The reversal of 21788541083 is 38014588712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21788541083 - 2³² = 17493573787 is a prime.

It is not a weakly prime, because it can be changed into another prime (21788541683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10894270541 + 10894270542.

It is an arithmetic number, because the mean of its divisors is an integer number (10894270542).

Almost surely, 2^21788541083 is an apocalyptic number.

21788541083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21788541083 is an equidigital number, since it uses as much as digits as its factorization.

21788541083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 21788541083 in words is "twenty-one billion, seven hundred eighty-eight million, five hundred forty-one thousand, eighty-three".