20116111757697 has 20 divisors (see below), whose sum is σ = 30061005794820. Its totient is φ = 13405826865024.

The previous prime is 20116111757639. The next prime is 20116111757701. The reversal of 20116111757697 is 79675711161102.

20116111757697 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 61 + 1 + 1 + 7 + 576 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16312301244801 + 3803810512896 = 4038849^2 + 1950336^2 .

It is not a de Polignac number, because 20116111757697 - 2¹² = 20116111753601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20116111797697) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45280428 + ... + 45722525.

It is an arithmetic number, because the mean of its divisors is an integer number (1503050289741).

Almost surely, 2^{20116111757697} is an apocalyptic number.

20116111757697 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20116111757697 is a deficient number, since it is larger than the sum of its proper divisors (9944894037123).

20116111757697 is an equidigital number, since it uses as much as digits as its factorization.

20116111757697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91005694 (or 91005685 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 54.

The spelling of 20116111757697 in words is "twenty trillion, one hundred sixteen billion, one hundred eleven million, seven hundred fifty-seven thousand, six hundred ninety-seven".