27977146986 has 32 divisors (see below), whose sum is σ = 56805007680. Its totient is φ = 9184006656.

The previous prime is 27977146937. The next prime is 27977147083. The reversal of 27977146986 is 68964177972.

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, 1966330 + ... + 1980506.

It is an arithmetic number, because the mean of its divisors is an integer number (1775156490).

Almost surely, 2^27977146986 is an apocalyptic number.

27977146986 is an abundant number, since it is smaller than the sum of its proper divisors (28827860694).

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

27977146986 is a wasteful number, since it uses less digits than its factorization.

27977146986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19158.

The product of its digits is 64012032, while the sum is 66.

The spelling of 27977146986 in words is "twenty-seven billion, nine hundred seventy-seven million, one hundred forty-six thousand, nine hundred eighty-six".