12090272545 has 16 divisors (see below), whose sum is σ = 15785436240. Its totient is φ = 8836153344.

The previous prime is 12090272533. The next prime is 12090272563. The reversal of 12090272545 is 54527209021.

It can be written as a sum of positive squares in 8 ways, for example, as 588353536 + 11501919009 = 24256^2 + 107247^2 .

It is a cyclic number.

It is not a de Polignac number, because 12090272545 - 2¹⁷ = 12090141473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952480 + ... + 965089.

It is an arithmetic number, because the mean of its divisors is an integer number (986589765).

Almost surely, 2^12090272545 is an apocalyptic number.

It is an amenable number.

12090272545 is a deficient number, since it is larger than the sum of its proper divisors (3695163695).

12090272545 is a wasteful number, since it uses less digits than its factorization.

12090272545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917684.

The product of its (nonzero) digits is 50400, while the sum is 37.

It can be divided in two parts, 12090 and 272545, that added together give a triangular number (284635 = T₇₅₄).

The spelling of 12090272545 in words is "twelve billion, ninety million, two hundred seventy-two thousand, five hundred forty-five".