27700016697 has 6 divisors (see below), whose sum is σ = 40011135242. Its totient is φ = 18466677792.

The previous prime is 27700016693. The next prime is 27700016713. The reversal of 27700016697 is 79661000772.

It can be written as a sum of positive squares in only one way, i.e., 24831771561 + 2868245136 = 157581^2 + 53556^2 .

It is not a de Polignac number, because 27700016697 - 2² = 27700016693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27700016693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1538889808 + ... + 1538889825.

Almost surely, 2^27700016697 is an apocalyptic number.

It is an amenable number.

27700016697 is a deficient number, since it is larger than the sum of its proper divisors (12311118545).

27700016697 is a wasteful number, since it uses less digits than its factorization.

27700016697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077779639 (or 3077779636 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The spelling of 27700016697 in words is "twenty-seven billion, seven hundred million, sixteen thousand, six hundred ninety-seven".