27545829109212 has 24 divisors (see below), whose sum is σ = 64295696077200. Its totient is φ = 9178786633216.

The previous prime is 27545829109163. The next prime is 27545829109219. The reversal of 27545829109212 is 21290192854572.

It is a super-2 number, since 2×27545829109212² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27545829109219) 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, 394514037 + ... + 394583852.

It is an arithmetic number, because the mean of its divisors is an integer number (2678987336550).

Almost surely, 2^{27545829109212} is an apocalyptic number.

It is an amenable number.

27545829109212 is an abundant number, since it is smaller than the sum of its proper divisors (36749866967988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27545829109212 is a wasteful number, since it uses less digits than its factorization.

27545829109212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789100805 (or 789100803 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 27545829109212 in words is "twenty-seven trillion, five hundred forty-five billion, eight hundred twenty-nine million, one hundred nine thousand, two hundred twelve".