21427474671334 has 4 divisors (see below), whose sum is σ = 32141212007004. Its totient is φ = 10713737335666.

The previous prime is 21427474671313. The next prime is 21427474671403. The reversal of 21427474671334 is 43317647472412.

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

It is a super-2 number, since 2×21427474671334² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5356868667832 + ... + 5356868667835.

It is an arithmetic number, because the mean of its divisors is an integer number (8035303001751).

Almost surely, 2^{21427474671334} is an apocalyptic number.

21427474671334 is a deficient number, since it is larger than the sum of its proper divisors (10713737335670).

21427474671334 is a wasteful number, since it uses less digits than its factorization.

21427474671334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10713737335669.

The product of its digits is 18966528, while the sum is 55.

The spelling of 21427474671334 in words is "twenty-one trillion, four hundred twenty-seven billion, four hundred seventy-four million, six hundred seventy-one thousand, three hundred thirty-four".