18095161835561 has 2 divisors, whose sum is σ = 18095161835562. Its totient is φ = 18095161835560.

The previous prime is 18095161835501. The next prime is 18095161835567. The reversal of 18095161835561 is 16553816159081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13723549929961 + 4371611905600 = 3704531^2 + 2090840^2 .

It is a cyclic number.

It is not a de Polignac number, because 18095161835561 - 2¹⁸ = 18095161573417 is a prime.

It is a super-3 number, since 3×18095161835561³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18095161835561.

It is not a weakly prime, because it can be changed into another prime (18095161835567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9047580917780 + 9047580917781.

It is an arithmetic number, because the mean of its divisors is an integer number (9047580917781).

Almost surely, 2^{18095161835561} is an apocalyptic number.

It is an amenable number.

18095161835561 is a deficient number, since it is larger than the sum of its proper divisors (1).

18095161835561 is an equidigital number, since it uses as much as digits as its factorization.

18095161835561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776000, while the sum is 59.

The spelling of 18095161835561 in words is "eighteen trillion, ninety-five billion, one hundred sixty-one million, eight hundred thirty-five thousand, five hundred sixty-one".