21676271846 has 16 divisors (see below), whose sum is σ = 33933993984. Its totient is φ = 10365104904.

The previous prime is 21676271843. The next prime is 21676271867. The reversal of 21676271846 is 64817267612.

It is a super-2 number, since 2×21676271846² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21676271794 and 21676271803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21676271843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247355 + ... + 323321.

It is an arithmetic number, because the mean of its divisors is an integer number (2120874624).

Almost surely, 2^21676271846 is an apocalyptic number.

21676271846 is a deficient number, since it is larger than the sum of its proper divisors (12257722138).

21676271846 is a wasteful number, since it uses less digits than its factorization.

21676271846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82195.

The product of its digits is 1354752, while the sum is 50.

The spelling of 21676271846 in words is "twenty-one billion, six hundred seventy-six million, two hundred seventy-one thousand, eight hundred forty-six".