21296274508 has 12 divisors (see below), whose sum is σ = 37269613080. Its totient is φ = 10647813632.

The previous prime is 21296274499. The next prime is 21296274509. The reversal of 21296274508 is 80547269212.

It is not an unprimeable number, because it can be changed into a prime (21296274509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125883 + ... + 241741.

It is an arithmetic number, because the mean of its divisors is an integer number (3105801090).

Almost surely, 2^21296274508 is an apocalyptic number.

It is an amenable number.

21296274508 is a deficient number, since it is larger than the sum of its proper divisors (15973338572).

21296274508 is a wasteful number, since it uses less digits than its factorization.

21296274508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161816 (or 161814 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 21296274508 in words is "twenty-one billion, two hundred ninety-six million, two hundred seventy-four thousand, five hundred eight".