18060212515 has 16 divisors (see below), whose sum is σ = 21984900480. Its totient is φ = 14240378880.

The previous prime is 18060212503. The next prime is 18060212543. The reversal of 18060212515 is 51521206081.

It is not a de Polignac number, because 18060212515 - 2¹⁵ = 18060179747 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188295 + ... + 267535.

It is an arithmetic number, because the mean of its divisors is an integer number (1374056280).

Almost surely, 2^18060212515 is an apocalyptic number.

18060212515 is a deficient number, since it is larger than the sum of its proper divisors (3924687965).

18060212515 is an equidigital number, since it uses as much as digits as its factorization.

18060212515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79902.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 18060212515 its reverse (51521206081), we get a palindrome (69581418596).

The spelling of 18060212515 in words is "eighteen billion, sixty million, two hundred twelve thousand, five hundred fifteen".