12181545934 has 16 divisors (see below), whose sum is σ = 18364778496. Its totient is φ = 6060015000.

The previous prime is 12181545931. The next prime is 12181545953. The reversal of 12181545934 is 43954518121.

It is a super-2 number, since 2×12181545934² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12181545931) 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, 392079 + ... + 422005.

It is an arithmetic number, because the mean of its divisors is an integer number (1147798656).

Almost surely, 2^12181545934 is an apocalyptic number.

12181545934 is a deficient number, since it is larger than the sum of its proper divisors (6183232562).

12181545934 is a wasteful number, since it uses less digits than its factorization.

12181545934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30951.

The product of its digits is 172800, while the sum is 43.

The spelling of 12181545934 in words is "twelve billion, one hundred eighty-one million, five hundred forty-five thousand, nine hundred thirty-four".