12155280361 has 8 divisors (see below), whose sum is σ = 13935574080. Its totient is φ = 10385942928.

The previous prime is 12155280341. The next prime is 12155280391. The reversal of 12155280361 is 16308255121.

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

It is a cyclic number.

It is not a de Polignac number, because 12155280361 - 2¹⁷ = 12155149289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12155280341) 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, 2736691 + ... + 2741128.

It is an arithmetic number, because the mean of its divisors is an integer number (1741946760).

Almost surely, 2^12155280361 is an apocalyptic number.

It is an amenable number.

12155280361 is a deficient number, since it is larger than the sum of its proper divisors (1780293719).

12155280361 is an equidigital number, since it uses as much as digits as its factorization.

12155280361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478143.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 12155280361 in words is "twelve billion, one hundred fifty-five million, two hundred eighty thousand, three hundred sixty-one".