27366699217961 has 32 divisors (see below), whose sum is σ = 29970529603200. Its totient is φ = 24906495651840.

The previous prime is 27366699217937. The next prime is 27366699217973. The reversal of 27366699217961 is 16971299666372.

It is a cyclic number.

It is not a de Polignac number, because 27366699217961 - 2¹⁰ = 27366699216937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27366699277961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6616241 + ... + 9925121.

It is an arithmetic number, because the mean of its divisors is an integer number (936579050100).

Almost surely, 2^{27366699217961} is an apocalyptic number.

It is an amenable number.

27366699217961 is a deficient number, since it is larger than the sum of its proper divisors (2603830385239).

27366699217961 is a wasteful number, since it uses less digits than its factorization.

27366699217961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309129.

The product of its digits is 555532992, while the sum is 74.

The spelling of 27366699217961 in words is "twenty-seven trillion, three hundred sixty-six billion, six hundred ninety-nine million, two hundred seventeen thousand, nine hundred sixty-one".