27061668290 has 16 divisors (see below), whose sum is σ = 49899076920. Its totient is φ = 10560650880.

The previous prime is 27061668269. The next prime is 27061668307. The reversal of 27061668290 is 9286616072.

It can be written as a sum of positive squares in 4 ways, for example, as 18591595201 + 8470073089 = 136351^2 + 92033^2 .

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, 33001625 + ... + 33002444.

Almost surely, 2^27061668290 is an apocalyptic number.

27061668290 is a deficient number, since it is larger than the sum of its proper divisors (22837408630).

27061668290 is a wasteful number, since it uses less digits than its factorization.

27061668290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66004117.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 27061668290 in words is "twenty-seven billion, sixty-one million, six hundred sixty-eight thousand, two hundred ninety".