21115143414 has 12 divisors (see below), whose sum is σ = 45749477436. Its totient is φ = 7038381132.

The previous prime is 21115143409. The next prime is 21115143419. The reversal of 21115143414 is 41434151112.

It is a happy number.

21115143414 is a `hidden beast` number, since 2 + 111 + 514 + 34 + 1 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (21115143409) and next prime (21115143419).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21115143419) 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 5 ways as a sum of consecutive naturals, for example, 586531744 + ... + 586531779.

It is an arithmetic number, because the mean of its divisors is an integer number (3812456453).

Almost surely, 2^21115143414 is an apocalyptic number.

21115143414 is an abundant number, since it is smaller than the sum of its proper divisors (24634334022).

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

21115143414 is a wasteful number, since it uses less digits than its factorization.

21115143414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173063531 (or 1173063528 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

Adding to 21115143414 its reverse (41434151112), we get a palindrome (62549294526).

The spelling of 21115143414 in words is "twenty-one billion, one hundred fifteen million, one hundred forty-three thousand, four hundred fourteen".