21715062383 has 4 divisors (see below), whose sum is σ = 24817214160. Its totient is φ = 18612910608.

The previous prime is 21715062377. The next prime is 21715062389. The reversal of 21715062383 is 38326051712.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21715062377) and next prime (21715062389).

It is a cyclic number.

It is not a de Polignac number, because 21715062383 - 2⁴ = 21715062367 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 (21715062389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551075878 + ... + 1551075891.

It is an arithmetic number, because the mean of its divisors is an integer number (6204303540).

Almost surely, 2^21715062383 is an apocalyptic number.

21715062383 is a deficient number, since it is larger than the sum of its proper divisors (3102151777).

21715062383 is an equidigital number, since it uses as much as digits as its factorization.

21715062383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102151776.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 21715062383 in words is "twenty-one billion, seven hundred fifteen million, sixty-two thousand, three hundred eighty-three".