21130575383 has 2 divisors, whose sum is σ = 21130575384. Its totient is φ = 21130575382.

The previous prime is 21130575379. The next prime is 21130575409. The reversal of 21130575383 is 38357503112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21130575383 - 2² = 21130575379 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21130575343) 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 as a sum of consecutive naturals, namely, 10565287691 + 10565287692.

It is an arithmetic number, because the mean of its divisors is an integer number (10565287692).

Almost surely, 2^21130575383 is an apocalyptic number.

21130575383 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130575383 is an equidigital number, since it uses as much as digits as its factorization.

21130575383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 21130575383 in words is "twenty-one billion, one hundred thirty million, five hundred seventy-five thousand, three hundred eighty-three".