12111945955 has 8 divisors (see below), whose sum is σ = 14538510000. Its totient is φ = 9686773536.

The previous prime is 12111945943. The next prime is 12111945959. The reversal of 12111945955 is 55954911121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111945955 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111945959) 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, 328660 + ... + 363649.

It is an arithmetic number, because the mean of its divisors is an integer number (1817313750).

Almost surely, 2^12111945955 is an apocalyptic number.

12111945955 is a deficient number, since it is larger than the sum of its proper divisors (2426564045).

12111945955 is an equidigital number, since it uses as much as digits as its factorization.

12111945955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695813.

The product of its digits is 81000, while the sum is 43.

The spelling of 12111945955 in words is "twelve billion, one hundred eleven million, nine hundred forty-five thousand, nine hundred fifty-five".