21862380359 has 4 divisors (see below), whose sum is σ = 22125782616. Its totient is φ = 21598978104.

The previous prime is 21862380313. The next prime is 21862380361. The reversal of 21862380359 is 95308326812.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21862380359 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 (21862383359) 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, 131701004 + ... + 131701169.

It is an arithmetic number, because the mean of its divisors is an integer number (5531445654).

Almost surely, 2^21862380359 is an apocalyptic number.

21862380359 is a deficient number, since it is larger than the sum of its proper divisors (263402257).

21862380359 is an equidigital number, since it uses as much as digits as its factorization.

21862380359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263402256.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 21862380359 in words is "twenty-one billion, eight hundred sixty-two million, three hundred eighty thousand, three hundred fifty-nine".