15672272018 has 32 divisors (see below), whose sum is σ = 28216823040. Its totient is φ = 6449552640.

The previous prime is 15672272009. The next prime is 15672272029. The reversal of 15672272018 is 81027227651.

It is a super-2 number, since 2×15672272018² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924698 + ... + 941493.

It is an arithmetic number, because the mean of its divisors is an integer number (881775720).

Almost surely, 2^15672272018 is an apocalyptic number.

15672272018 is a deficient number, since it is larger than the sum of its proper divisors (12544551022).

15672272018 is a wasteful number, since it uses less digits than its factorization.

15672272018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866242.

The product of its (nonzero) digits is 94080, while the sum is 41.

Adding to 15672272018 its reverse (81027227651), we get a palindrome (96699499669).

The spelling of 15672272018 in words is "fifteen billion, six hundred seventy-two million, two hundred seventy-two thousand, eighteen".