1911617616161 has 16 divisors (see below), whose sum is σ = 2121088032000. Its totient is φ = 1708104512400.

The previous prime is 1911617616107. The next prime is 1911617616169. The reversal of 1911617616161 is 1616167161191.

It is not a de Polignac number, because 1911617616161 - 2¹⁴ = 1911617599777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1911617616169) 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, 3854246 + ... + 4321856.

It is an arithmetic number, because the mean of its divisors is an integer number (132568002000).

Almost surely, 2^{1911617616161} is an apocalyptic number.

1911617616161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1911617616161 is a deficient number, since it is larger than the sum of its proper divisors (209470415839).

1911617616161 is a wasteful number, since it uses less digits than its factorization.

1911617616161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473980.

The product of its digits is 81648, while the sum is 47.

The spelling of 1911617616161 in words is "one trillion, nine hundred eleven billion, six hundred seventeen million, six hundred sixteen thousand, one hundred sixty-one".