18015030525514 has 16 divisors (see below), whose sum is σ = 29484222803136. Its totient is φ = 8187238588000.

The previous prime is 18015030525511. The next prime is 18015030525521. The reversal of 18015030525514 is 41552503051081.

It is not an unprimeable number, because it can be changed into a prime (18015030525511) 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, 70452022 + ... + 70707265.

It is an arithmetic number, because the mean of its divisors is an integer number (1842763925196).

Almost surely, 2^{18015030525514} is an apocalyptic number.

18015030525514 is a deficient number, since it is larger than the sum of its proper divisors (11469192277622).

18015030525514 is a wasteful number, since it uses less digits than its factorization.

18015030525514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141165101.

The product of its (nonzero) digits is 120000, while the sum is 40.

Adding to 18015030525514 its reverse (41552503051081), we get a palindrome (59567533576595).

The spelling of 18015030525514 in words is "eighteen trillion, fifteen billion, thirty million, five hundred twenty-five thousand, five hundred fourteen".