28012787542116 has 120 divisors (see below), whose sum is σ = 80352113527224. Its totient is φ = 8456690511360.

The previous prime is 28012787542109. The next prime is 28012787542183. The reversal of 28012787542116 is 61124578721082.

28012787542116 is a `hidden beast` number, since 2 + 8 + 0 + 1 + 2 + 7 + 87 + 542 + 1 + 16 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10199745239616 + 17813042302500 = 3193704^2 + 4220550^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62519305 + ... + 62965776.

Almost surely, 2^{28012787542116} is an apocalyptic number.

28012787542116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28012787542116 is an abundant number, since it is smaller than the sum of its proper divisors (52339325985108).

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

28012787542116 is a wasteful number, since it uses less digits than its factorization.

28012787542116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125485163 (or 125485152 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 28012787542116 in words is "twenty-eight trillion, twelve billion, seven hundred eighty-seven million, five hundred forty-two thousand, one hundred sixteen".