27731466686 has 32 divisors (see below), whose sum is σ = 51869175552. Its totient is φ = 10802856960.

The previous prime is 27731466641. The next prime is 27731466691. The reversal of 27731466686 is 68666413772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2017790 + ... + 2031486.

It is an arithmetic number, because the mean of its divisors is an integer number (1620911736).

Almost surely, 2^27731466686 is an apocalyptic number.

27731466686 is a deficient number, since it is larger than the sum of its proper divisors (24137708866).

27731466686 is a wasteful number, since it uses less digits than its factorization.

27731466686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26864.

The product of its digits is 12192768, while the sum is 56.

The spelling of 27731466686 in words is "twenty-seven billion, seven hundred thirty-one million, four hundred sixty-six thousand, six hundred eighty-six".