12027278145 has 32 divisors (see below), whose sum is σ = 19704840192. Its totient is φ = 6261536192.

The previous prime is 12027278143. The next prime is 12027278161. The reversal of 12027278145 is 54187272021.

It is a cyclic number.

It is not a de Polignac number, because 12027278145 - 2¹ = 12027278143 is a prime.

It is a super-3 number, since 3×12027278145³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12027278143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247744 + ... + 292286.

It is an arithmetic number, because the mean of its divisors is an integer number (615776256).

Almost surely, 2^12027278145 is an apocalyptic number.

12027278145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12027278145 is a deficient number, since it is larger than the sum of its proper divisors (7677562047).

12027278145 is a wasteful number, since it uses less digits than its factorization.

12027278145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44981.

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 12027278145 in words is "twelve billion, twenty-seven million, two hundred seventy-eight thousand, one hundred forty-five".