21014478183 has 24 divisors (see below), whose sum is σ = 29047839744. Its totient is φ = 13512996720.

The previous prime is 21014478143. The next prime is 21014478197. The reversal of 21014478183 is 38187441012.

It is not a de Polignac number, because 21014478183 - 2¹² = 21014474087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014478143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 873210 + ... + 896952.

It is an arithmetic number, because the mean of its divisors is an integer number (1210326656).

Almost surely, 2^21014478183 is an apocalyptic number.

21014478183 is a deficient number, since it is larger than the sum of its proper divisors (8033361561).

21014478183 is a wasteful number, since it uses less digits than its factorization.

21014478183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24115 (or 24084 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 21014478183 in words is "twenty-one billion, fourteen million, four hundred seventy-eight thousand, one hundred eighty-three".