16541540515412 has 24 divisors (see below), whose sum is σ = 33241373286240. Its totient is φ = 7123151417760.

The previous prime is 16541540515387. The next prime is 16541540515417. The reversal of 16541540515412 is 21451504514561.

It is a happy number.

16541540515412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16541540515417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9893265023 + ... + 9893266694.

It is an arithmetic number, because the mean of its divisors is an integer number (1385057220260).

Almost surely, 2^{16541540515412} is an apocalyptic number.

It is an amenable number.

16541540515412 is an abundant number, since it is smaller than the sum of its proper divisors (16699832770828).

16541540515412 is a wasteful number, since it uses less digits than its factorization.

16541540515412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19786531751 (or 19786531749 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 44.

The spelling of 16541540515412 in words is "sixteen trillion, five hundred forty-one billion, five hundred forty million, five hundred fifteen thousand, four hundred twelve".