12272545405 has 8 divisors (see below), whose sum is σ = 14727699000. Its totient is φ = 9817606656.

The previous prime is 12272545393. The next prime is 12272545423. The reversal of 12272545405 is 50454527221.

It can be written as a sum of positive squares in 4 ways, for example, as 1887876 + 12270657529 = 1374^2 + 110773^2 .

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 12272545405 - 2¹⁷ = 12272414333 is a prime.

It is a super-2 number, since 2×12272545405² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127621 + ... + 202069.

It is an arithmetic number, because the mean of its divisors is an integer number (1840962375).

Almost surely, 2^12272545405 is an apocalyptic number.

It is an amenable number.

12272545405 is a deficient number, since it is larger than the sum of its proper divisors (2455153595).

12272545405 is an equidigital number, since it uses as much as digits as its factorization.

12272545405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107423.

The product of its (nonzero) digits is 112000, while the sum is 37.

The spelling of 12272545405 in words is "twelve billion, two hundred seventy-two million, five hundred forty-five thousand, four hundred five".