21876147874 has 16 divisors (see below), whose sum is σ = 37504427328. Its totient is φ = 9374877072.

The previous prime is 21876147841. The next prime is 21876147913. The reversal of 21876147874 is 47874167812.

It is a super-2 number, since 2×21876147874² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218997 + ... + 302839.

It is an arithmetic number, because the mean of its divisors is an integer number (2344026708).

Almost surely, 2^21876147874 is an apocalyptic number.

21876147874 is a deficient number, since it is larger than the sum of its proper divisors (15628279454).

21876147874 is a wasteful number, since it uses less digits than its factorization.

21876147874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102489.

The product of its digits is 4214784, while the sum is 55.

The spelling of 21876147874 in words is "twenty-one billion, eight hundred seventy-six million, one hundred forty-seven thousand, eight hundred seventy-four".