21295590274 has 8 divisors (see below), whose sum is σ = 36506726208. Its totient is φ = 9126681540.

The previous prime is 21295590269. The next prime is 21295590289. The reversal of 21295590274 is 47209559212.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 760556782 + ... + 760556809.

It is an arithmetic number, because the mean of its divisors is an integer number (4563340776).

Almost surely, 2^21295590274 is an apocalyptic number.

21295590274 is a deficient number, since it is larger than the sum of its proper divisors (15211135934).

21295590274 is a wasteful number, since it uses less digits than its factorization.

21295590274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521113600.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 21295590274 in words is "twenty-one billion, two hundred ninety-five million, five hundred ninety thousand, two hundred seventy-four".