21023707383 has 60 divisors (see below), whose sum is σ = 37173513520. Its totient is φ = 11599023744.

The previous prime is 21023707363. The next prime is 21023707387. The reversal of 21023707383 is 38370732012.

21023707383 is a `hidden beast` number, since 210 + 2 + 370 + 73 + 8 + 3 = 666.

It is not a de Polignac number, because 21023707383 - 2²¹ = 21021610231 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 (21023707387) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 454803 + ... + 498891.

Almost surely, 2^21023707383 is an apocalyptic number.

21023707383 is a deficient number, since it is larger than the sum of its proper divisors (16149806137).

21023707383 is an equidigital number, since it uses as much as digits as its factorization.

21023707383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44166 (or 44128 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The spelling of 21023707383 in words is "twenty-one billion, twenty-three million, seven hundred seven thousand, three hundred eighty-three".