21434506709112 has 64 divisors (see below), whose sum is σ = 68046053049600. Its totient is φ = 6124144773600.

The previous prime is 21434506709111. The next prime is 21434506709129. The reversal of 21434506709112 is 21190760543412.

21434506709112 is a `hidden beast` number, since 2 + 1 + 43 + 4 + 506 + 7 + 0 + 91 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434506709111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7088129014 + ... + 7088132037.

It is an arithmetic number, because the mean of its divisors is an integer number (1063219578900).

Almost surely, 2^{21434506709112} is an apocalyptic number.

It is an amenable number.

21434506709112 is an abundant number, since it is smaller than the sum of its proper divisors (46611546340488).

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

21434506709112 is a wasteful number, since it uses less digits than its factorization.

21434506709112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14176261073 (or 14176261063 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 21434506709112 in words is "twenty-one trillion, four hundred thirty-four billion, five hundred six million, seven hundred nine thousand, one hundred twelve".