21275465514 has 16 divisors (see below), whose sum is σ = 42642052128. Its totient is φ = 7076634992.

The previous prime is 21275465501. The next prime is 21275465551. The reversal of 21275465514 is 41556457212.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3793677 + ... + 3799280.

It is an arithmetic number, because the mean of its divisors is an integer number (2665128258).

Almost surely, 2^21275465514 is an apocalyptic number.

21275465514 is an abundant number, since it is smaller than the sum of its proper divisors (21366586614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21275465514 is a wasteful number, since it uses less digits than its factorization.

21275465514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7593429.

The product of its digits is 336000, while the sum is 42.

The spelling of 21275465514 in words is "twenty-one billion, two hundred seventy-five million, four hundred sixty-five thousand, five hundred fourteen".