16545520231115 has 16 divisors (see below), whose sum is σ = 19929509856576. Its totient is φ = 13186512460800.

The previous prime is 16545520231109. The next prime is 16545520231127. The reversal of 16545520231115 is 51113202554561.

It is not a de Polignac number, because 16545520231115 - 2²⁶ = 16545453122251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5385794 + ... + 7880216.

It is an arithmetic number, because the mean of its divisors is an integer number (1245594366036).

Almost surely, 2^{16545520231115} is an apocalyptic number.

16545520231115 is a deficient number, since it is larger than the sum of its proper divisors (3383989625461).

16545520231115 is a wasteful number, since it uses less digits than its factorization.

16545520231115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499430.

The product of its (nonzero) digits is 180000, while the sum is 41.

Adding to 16545520231115 its reverse (51113202554561), we get a palindrome (67658722785676).

The spelling of 16545520231115 in words is "sixteen trillion, five hundred forty-five billion, five hundred twenty million, two hundred thirty-one thousand, one hundred fifteen".