21614372371 has 4 divisors (see below), whose sum is σ = 21620341872. Its totient is φ = 21608402872.

The previous prime is 21614372369. The next prime is 21614372447. The reversal of 21614372371 is 17327341612.

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

It is a cyclic number.

It is not a de Polignac number, because 21614372371 - 2¹ = 21614372369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21614372371.

It is not an unprimeable number, because it can be changed into a prime (21614372671) 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, 2979316 + ... + 2986561.

It is an arithmetic number, because the mean of its divisors is an integer number (5405085468).

Almost surely, 2^21614372371 is an apocalyptic number.

21614372371 is a deficient number, since it is larger than the sum of its proper divisors (5969501).

21614372371 is an equidigital number, since it uses as much as digits as its factorization.

21614372371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5969500.

The product of its digits is 42336, while the sum is 37.

The spelling of 21614372371 in words is "twenty-one billion, six hundred fourteen million, three hundred seventy-two thousand, three hundred seventy-one".