21111682563383 has 8 divisors (see below), whose sum is σ = 22353990471648. Its totient is φ = 19869424013824.

The previous prime is 21111682563379. The next prime is 21111682563407. The reversal of 21111682563383 is 38336528611112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21111682563383 - 2² = 21111682563379 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111682563373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11457266 + ... + 13171647.

It is an arithmetic number, because the mean of its divisors is an integer number (2794248808956).

Almost surely, 2^{21111682563383} is an apocalyptic number.

21111682563383 is a deficient number, since it is larger than the sum of its proper divisors (1242307908265).

21111682563383 is a wasteful number, since it uses less digits than its factorization.

21111682563383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24679353.

The product of its digits is 1244160, while the sum is 50.

The spelling of 21111682563383 in words is "twenty-one trillion, one hundred eleven billion, six hundred eighty-two million, five hundred sixty-three thousand, three hundred eighty-three".