36109795781 has 2 divisors, whose sum is σ = 36109795782. Its totient is φ = 36109795780.

The previous prime is 36109795747. The next prime is 36109795793. The reversal of 36109795781 is 18759790163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35897365156 + 212430625 = 189466^2 + 14575^2 .

It is a cyclic number.

It is not a de Polignac number, because 36109795781 - 2¹⁰ = 36109794757 is a prime.

It is a super-2 number, since 2×36109795781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36109795721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18054897890 + 18054897891.

It is an arithmetic number, because the mean of its divisors is an integer number (18054897891).

Almost surely, 2^36109795781 is an apocalyptic number.

It is an amenable number.

36109795781 is a deficient number, since it is larger than the sum of its proper divisors (1).

36109795781 is an equidigital number, since it uses as much as digits as its factorization.

36109795781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 56.

The spelling of 36109795781 in words is "thirty-six billion, one hundred nine million, seven hundred ninety-five thousand, seven hundred eighty-one".