21554059383 has 12 divisors (see below), whose sum is σ = 32207215560. Its totient is φ = 13873877136.

The previous prime is 21554059337. The next prime is 21554059403. The reversal of 21554059383 is 38395045512.

21554059383 is a `hidden beast` number, since 2 + 1 + 5 + 54 + 0 + 593 + 8 + 3 = 666.

It is not a de Polignac number, because 21554059383 - 2⁹ = 21554058871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21554059313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41291041 + ... + 41291562.

It is an arithmetic number, because the mean of its divisors is an integer number (2683934630).

Almost surely, 2^21554059383 is an apocalyptic number.

21554059383 is a deficient number, since it is larger than the sum of its proper divisors (10653156177).

21554059383 is a wasteful number, since it uses less digits than its factorization.

21554059383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82582638 (or 82582635 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 21554059383 in words is "twenty-one billion, five hundred fifty-four million, fifty-nine thousand, three hundred eighty-three".