27660205066 has 16 divisors (see below), whose sum is σ = 44977782528. Its totient is φ = 12681702000.

The previous prime is 27660205057. The next prime is 27660205093. The reversal of 27660205066 is 66050206672.

It is a happy number.

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, 3518770 + ... + 3526621.

It is an arithmetic number, because the mean of its divisors is an integer number (2811111408).

Almost surely, 2^27660205066 is an apocalyptic number.

27660205066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27660205066 is a deficient number, since it is larger than the sum of its proper divisors (17317577462).

27660205066 is a wasteful number, since it uses less digits than its factorization.

27660205066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045557.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 27660205066 in words is "twenty-seven billion, six hundred sixty million, two hundred five thousand, sixty-six".