21441433430412 has 72 divisors (see below), whose sum is σ = 54564724141200. Its totient is φ = 7098943870080.

The previous prime is 21441433430411. The next prime is 21441433430509. The reversal of 21441433430412 is 21403433414412.

21441433430412 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 1 + 4 + 334 + 304 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21441433430411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257231862 + ... + 257315202.

It is an arithmetic number, because the mean of its divisors is an integer number (757843390850).

Almost surely, 2^{21441433430412} is an apocalyptic number.

It is an amenable number.

21441433430412 is an abundant number, since it is smaller than the sum of its proper divisors (33123290710788).

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

21441433430412 is a wasteful number, since it uses less digits than its factorization.

21441433430412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131463 (or 131458 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 21441433430412 its reverse (21403433414412), we get a palindrome (42844866844824).

The spelling of 21441433430412 in words is "twenty-one trillion, four hundred forty-one billion, four hundred thirty-three million, four hundred thirty thousand, four hundred twelve".