12111374628 has 18 divisors (see below), whose sum is σ = 30614863734. Its totient is φ = 4037124864.

The previous prime is 12111374591. The next prime is 12111374633. The reversal of 12111374628 is 82647311121.

12111374628 is a `hidden beast` number, since 1 + 2 + 11 + 13 + 7 + 4 + 628 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8211621924 + 3899752704 = 90618^2 + 62448^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 336427073 = 12111374628 / (1 + 2 + 1 + 1 + 1 + 3 + 7 + 4 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 12111374592 and 12111374601.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168213501 + ... + 168213572.

It is an arithmetic number, because the mean of its divisors is an integer number (1700825763).

Almost surely, 2^12111374628 is an apocalyptic number.

12111374628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12111374628 is an abundant number, since it is smaller than the sum of its proper divisors (18503489106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111374628 is a wasteful number, since it uses less digits than its factorization.

12111374628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336427083 (or 336427078 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

Adding to 12111374628 its reverse (82647311121), we get a palindrome (94758685749).

The spelling of 12111374628 in words is "twelve billion, one hundred eleven million, three hundred seventy-four thousand, six hundred twenty-eight".