21273460334 has 16 divisors (see below), whose sum is σ = 38054389248. Its totient is φ = 8720797272.

The previous prime is 21273460321. The next prime is 21273460361. The reversal of 21273460334 is 43306437212.

It is a super-4 number, since 4×21273460334⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21273460294 and 21273460303.

It is a congruent number.

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, 33033002 + ... + 33033645.

It is an arithmetic number, because the mean of its divisors is an integer number (2378399328).

Almost surely, 2^21273460334 is an apocalyptic number.

21273460334 is a deficient number, since it is larger than the sum of its proper divisors (16780928914).

21273460334 is a wasteful number, since it uses less digits than its factorization.

21273460334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66066679.

The product of its (nonzero) digits is 72576, while the sum is 35.

Adding to 21273460334 its reverse (43306437212), we get a palindrome (64579897546).

The spelling of 21273460334 in words is "twenty-one billion, two hundred seventy-three million, four hundred sixty thousand, three hundred thirty-four".