27660518986 has 16 divisors (see below), whose sum is σ = 42840887040. Its totient is φ = 13380467040.

The previous prime is 27660518947. The next prime is 27660519013. The reversal of 27660518986 is 68981506672.

It is a self number, because there is not a number n which added to its sum of digits gives 27660518986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175270 + ... + 293326.

It is an arithmetic number, because the mean of its divisors is an integer number (2677555440).

Almost surely, 2^27660518986 is an apocalyptic number.

27660518986 is a deficient number, since it is larger than the sum of its proper divisors (15180368054).

27660518986 is a wasteful number, since it uses less digits than its factorization.

27660518986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121869.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 27660518986 in words is "twenty-seven billion, six hundred sixty million, five hundred eighteen thousand, nine hundred eighty-six".