27286986780 has 120 divisors (see below), whose sum is σ = 88361750400. Its totient is φ = 7041790080.

The previous prime is 27286986763. The next prime is 27286986799. The reversal of 27286986780 is 8768968272.

It is a congruent number.

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, 221455 + ... + 321894.

It is an arithmetic number, because the mean of its divisors is an integer number (736347920).

Almost surely, 2^27286986780 is an apocalyptic number.

27286986780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27286986780 is an abundant number, since it is smaller than the sum of its proper divisors (61074763620).

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

27286986780 is a wasteful number, since it uses less digits than its factorization.

27286986780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543401 (or 543390 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 27286986780 in words is "twenty-seven billion, two hundred eighty-six million, nine hundred eighty-six thousand, seven hundred eighty".