27787369680 has 160 divisors (see below), whose sum is σ = 109385260800. Its totient is φ = 6351395328.

The previous prime is 27787369663. The next prime is 27787369691. The reversal of 27787369680 is 8696378772.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 903775 + ... + 934014.

It is an arithmetic number, because the mean of its divisors is an integer number (683657880).

Almost surely, 2^27787369680 is an apocalyptic number.

27787369680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27787369680 is an abundant number, since it is smaller than the sum of its proper divisors (81597891120).

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

27787369680 is a wasteful number, since it uses less digits than its factorization.

27787369680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837818 (or 1837806 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 27787369680 in words is "twenty-seven billion, seven hundred eighty-seven million, three hundred sixty-nine thousand, six hundred eighty".