21134706274 has 24 divisors (see below), whose sum is σ = 34903155420. Its totient is φ = 9590945760.

The previous prime is 21134706251. The next prime is 21134706293. The reversal of 21134706274 is 47260743112.

It can be written as a sum of positive squares in 2 ways, for example, as 17322508225 + 3812198049 = 131615^2 + 61743^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77112 + ... + 219580.

Almost surely, 2^21134706274 is an apocalyptic number.

21134706274 is a deficient number, since it is larger than the sum of its proper divisors (13768449146).

21134706274 is a wasteful number, since it uses less digits than its factorization.

21134706274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143106 (or 143095 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 21134706274 in words is "twenty-one billion, one hundred thirty-four million, seven hundred six thousand, two hundred seventy-four".