16691760707 has 2 divisors, whose sum is σ = 16691760708. Its totient is φ = 16691760706.

The previous prime is 16691760703. The next prime is 16691760731. The reversal of 16691760707 is 70706719661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16691760707 - 2² = 16691760703 is a prime.

It is a super-2 number, since 2×16691760707² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16691760703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8345880353 + 8345880354.

It is an arithmetic number, because the mean of its divisors is an integer number (8345880354).

Almost surely, 2^16691760707 is an apocalyptic number.

16691760707 is a deficient number, since it is larger than the sum of its proper divisors (1).

16691760707 is an equidigital number, since it uses as much as digits as its factorization.

16691760707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 50.

The spelling of 16691760707 in words is "sixteen billion, six hundred ninety-one million, seven hundred sixty thousand, seven hundred seven".