12180361923 has 12 divisors (see below), whose sum is σ = 17764671600. Its totient is φ = 8041403376.

The previous prime is 12180361913. The next prime is 12180361969. The reversal of 12180361923 is 32916308121.

12180361923 is a `hidden beast` number, since 1 + 2 + 18 + 0 + 3 + 619 + 23 = 666.

It is not a de Polignac number, because 12180361923 - 2²¹ = 12178264771 is a prime.

It is a super-2 number, since 2×12180361923² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12180361913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6568848 + ... + 6570701.

It is an arithmetic number, because the mean of its divisors is an integer number (1480389300).

Almost surely, 2^12180361923 is an apocalyptic number.

12180361923 is a deficient number, since it is larger than the sum of its proper divisors (5584309677).

12180361923 is a wasteful number, since it uses less digits than its factorization.

12180361923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13139658 (or 13139655 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 12180361923 in words is "twelve billion, one hundred eighty million, three hundred sixty-one thousand, nine hundred twenty-three".