17111376780961 has 8 divisors (see below), whose sum is σ = 17359801751144. Its totient is φ = 16863330798720.

The previous prime is 17111376780959. The next prime is 17111376781019. The reversal of 17111376780961 is 16908767311171.

It can be written as a sum of positive squares in 4 ways, for example, as 2243944080400 + 14867432700561 = 1497980^2 + 3855831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17111376780961 - 2¹ = 17111376780959 is a prime.

It is a super-2 number, since 2×17111376780961² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17111376780896 and 17111376780905.

It is not an unprimeable number, because it can be changed into a prime (17111376730961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94656030 + ... + 94836631.

It is an arithmetic number, because the mean of its divisors is an integer number (2169975218893).

Almost surely, 2^{17111376780961} is an apocalyptic number.

It is an amenable number.

17111376780961 is a deficient number, since it is larger than the sum of its proper divisors (248424970183).

17111376780961 is a wasteful number, since it uses less digits than its factorization.

17111376780961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189493971.

The product of its (nonzero) digits is 2667168, while the sum is 58.

The spelling of 17111376780961 in words is "seventeen trillion, one hundred eleven billion, three hundred seventy-six million, seven hundred eighty thousand, nine hundred sixty-one".