21264552114 has 64 divisors (see below), whose sum is σ = 47944286208. Its totient is φ = 6242644800.

The previous prime is 21264552103. The next prime is 21264552149. The reversal of 21264552114 is 41125546212.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 109747 + ... + 233609.

It is an arithmetic number, because the mean of its divisors is an integer number (749129472).

Almost surely, 2^21264552114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21264552114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23972143104).

21264552114 is an abundant number, since it is smaller than the sum of its proper divisors (26679734094).

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

21264552114 is a wasteful number, since it uses less digits than its factorization.

21264552114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123983.

The product of its digits is 19200, while the sum is 33.

The spelling of 21264552114 in words is "twenty-one billion, two hundred sixty-four million, five hundred fifty-two thousand, one hundred fourteen".