3611235731166 has 96 divisors (see below), whose sum is σ = 9096947308800. Its totient is φ = 1013928122880.

The previous prime is 3611235731143. The next prime is 3611235731203. The reversal of 3611235731166 is 6611375321163.

3611235731166 is a `hidden beast` number, since 3 + 6 + 1 + 1 + 2 + 3 + 573 + 11 + 66 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20870286 + ... + 21042606.

It is an arithmetic number, because the mean of its divisors is an integer number (94759867800).

Almost surely, 2^{3611235731166} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3611235731166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4548473654400).

3611235731166 is an abundant number, since it is smaller than the sum of its proper divisors (5485711577634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3611235731166 is a wasteful number, since it uses less digits than its factorization.

3611235731166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175214 (or 175211 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 3611235731166 in words is "three trillion, six hundred eleven billion, two hundred thirty-five million, seven hundred thirty-one thousand, one hundred sixty-six".