3166026201581 has 2 divisors, whose sum is σ = 3166026201582. Its totient is φ = 3166026201580.

The previous prime is 3166026201577. The next prime is 3166026201617. The reversal of 3166026201581 is 1851026206613.

3166026201581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2327025160681 + 839001040900 = 1525459^2 + 915970^2 .

It is a cyclic number.

It is not a de Polignac number, because 3166026201581 - 2² = 3166026201577 is a prime.

It is a super-2 number, since 2×3166026201581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3166026201781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1583013100790 + 1583013100791.

It is an arithmetic number, because the mean of its divisors is an integer number (1583013100791).

Almost surely, 2^{3166026201581} is an apocalyptic number.

It is an amenable number.

3166026201581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3166026201581 is an equidigital number, since it uses as much as digits as its factorization.

3166026201581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 3166026201581 in words is "three trillion, one hundred sixty-six billion, twenty-six million, two hundred one thousand, five hundred eighty-one".