2691116916197 has 16 divisors (see below), whose sum is σ = 2702934414000. Its totient is φ = 2679331866624.

The previous prime is 2691116916179. The next prime is 2691116916209. The reversal of 2691116916197 is 7916196111962.

It is a happy number.

2691116916197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 480545649796 + 2210571266401 = 693214^2 + 1486799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2691116916197 - 2⁶ = 2691116916133 is a prime.

It is a super-2 number, since 2×2691116916197² (a number of 26 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 (2691116916127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762570329 + ... + 762573857.

It is an arithmetic number, because the mean of its divisors is an integer number (168933400875).

Almost surely, 2^{2691116916197} is an apocalyptic number.

It is an amenable number.

2691116916197 is a deficient number, since it is larger than the sum of its proper divisors (11817497803).

2691116916197 is a wasteful number, since it uses less digits than its factorization.

2691116916197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7240.

The product of its digits is 2204496, while the sum is 59.

The spelling of 2691116916197 in words is "two trillion, six hundred ninety-one billion, one hundred sixteen million, nine hundred sixteen thousand, one hundred ninety-seven".