16708968077 has 4 divisors (see below), whose sum is σ = 17285139420. Its totient is φ = 16132796736.

The previous prime is 16708968071. The next prime is 16708968173. The reversal of 16708968077 is 77086980761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8990642761 + 7718325316 = 94819^2 + 87854^2 .

It is a cyclic number.

It is not a de Polignac number, because 16708968077 - 2⁶ = 16708968013 is a prime.

It is a super-2 number, since 2×16708968077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16708968071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288085628 + ... + 288085685.

It is an arithmetic number, because the mean of its divisors is an integer number (4321284855).

Almost surely, 2^16708968077 is an apocalyptic number.

It is an amenable number.

16708968077 is a deficient number, since it is larger than the sum of its proper divisors (576171343).

16708968077 is an equidigital number, since it uses as much as digits as its factorization.

16708968077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576171342.

The product of its (nonzero) digits is 7112448, while the sum is 59.

The spelling of 16708968077 in words is "sixteen billion, seven hundred eight million, nine hundred sixty-eight thousand, seventy-seven".