21144231414 has 48 divisors (see below), whose sum is σ = 47551795200. Its totient is φ = 7041767400.

The previous prime is 21144231403. The next prime is 21144231461. The reversal of 21144231414 is 41413244112.

21144231414 is a `hidden beast` number, since 2 + 1 + 14 + 4 + 231 + 414 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 540487 + ... + 578285.

It is an arithmetic number, because the mean of its divisors is an integer number (990662400).

Almost surely, 2^21144231414 is an apocalyptic number.

21144231414 is an abundant number, since it is smaller than the sum of its proper divisors (26407563786).

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

21144231414 is a wasteful number, since it uses less digits than its factorization.

21144231414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38967 (or 38955 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 21144231414 its reverse (41413244112), we get a palindrome (62557475526).

The spelling of 21144231414 in words is "twenty-one billion, one hundred forty-four million, two hundred thirty-one thousand, four hundred fourteen".