21864227874 has 8 divisors (see below), whose sum is σ = 43728455760. Its totient is φ = 7288075956.

The previous prime is 21864227857. The next prime is 21864227911. The reversal of 21864227874 is 47872246812.

It is a sphenic number, since it is the product of 3 distinct primes.

21864227874 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1822018984 + ... + 1822018995.

It is an arithmetic number, because the mean of its divisors is an integer number (5466056970).

Almost surely, 2^21864227874 is an apocalyptic number.

21864227874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21864227874 is a wasteful number, since it uses less digits than its factorization.

21864227874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644037984.

The product of its digits is 2408448, while the sum is 51.

The spelling of 21864227874 in words is "twenty-one billion, eight hundred sixty-four million, two hundred twenty-seven thousand, eight hundred seventy-four".