21275454334 has 16 divisors (see below), whose sum is σ = 31975279056. Its totient is φ = 10617048000.

The previous prime is 21275454259. The next prime is 21275454367. The reversal of 21275454334 is 43345457212.

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, 2867089 + ... + 2874499.

It is an arithmetic number, because the mean of its divisors is an integer number (1998454941).

Almost surely, 2^21275454334 is an apocalyptic number.

21275454334 is a deficient number, since it is larger than the sum of its proper divisors (10699824722).

21275454334 is a wasteful number, since it uses less digits than its factorization.

21275454334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011.

The product of its digits is 403200, while the sum is 40.

The spelling of 21275454334 in words is "twenty-one billion, two hundred seventy-five million, four hundred fifty-four thousand, three hundred thirty-four".