28027561311612 has 72 divisors (see below), whose sum is σ = 76665836048256. Its totient is φ = 8936323889328.

The previous prime is 28027561311593. The next prime is 28027561311613. The reversal of 28027561311612 is 21611316572082.

28027561311612 is a `hidden beast` number, since 2 + 8 + 0 + 2 + 7 + 5 + 6 + 13 + 11 + 612 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027561311613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 626824158 + ... + 626868869.

It is an arithmetic number, because the mean of its divisors is an integer number (1064803278448).

Almost surely, 2^{28027561311612} is an apocalyptic number.

It is an amenable number.

28027561311612 is an abundant number, since it is smaller than the sum of its proper divisors (48638274736644).

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

28027561311612 is a wasteful number, since it uses less digits than its factorization.

28027561311612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253693069 (or 1253693055 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

Adding to 28027561311612 its reverse (21611316572082), we get a palindrome (49638877883694).

The spelling of 28027561311612 in words is "twenty-eight trillion, twenty-seven billion, five hundred sixty-one million, three hundred eleven thousand, six hundred twelve".