21145633314 has 32 divisors (see below), whose sum is σ = 46655288064. Its totient is φ = 6347656320.

The previous prime is 21145633309. The next prime is 21145633319. The reversal of 21145633314 is 41333654112.

It is an interprime number because it is at equal distance from previous prime (21145633309) and next prime (21145633319).

It is not an unprimeable number, because it can be changed into a prime (21145633319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3302874 + ... + 3309269.

It is an arithmetic number, because the mean of its divisors is an integer number (1457977752).

Almost surely, 2^21145633314 is an apocalyptic number.

21145633314 is an abundant number, since it is smaller than the sum of its proper divisors (25509654750).

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

21145633314 is a wasteful number, since it uses less digits than its factorization.

21145633314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612202.

The product of its digits is 25920, while the sum is 33.

The spelling of 21145633314 in words is "twenty-one billion, one hundred forty-five million, six hundred thirty-three thousand, three hundred fourteen".