36161205901 has 2 divisors, whose sum is σ = 36161205902. Its totient is φ = 36161205900.

The previous prime is 36161205881. The next prime is 36161205989. The reversal of 36161205901 is 10950216163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35176878025 + 984327876 = 187555^2 + 31374^2 .

It is a cyclic number.

It is not a de Polignac number, because 36161205901 - 2⁹ = 36161205389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36161205991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18080602950 + 18080602951.

It is an arithmetic number, because the mean of its divisors is an integer number (18080602951).

Almost surely, 2^36161205901 is an apocalyptic number.

It is an amenable number.

36161205901 is a deficient number, since it is larger than the sum of its proper divisors (1).

36161205901 is an equidigital number, since it uses as much as digits as its factorization.

36161205901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 36161205901 in words is "thirty-six billion, one hundred sixty-one million, two hundred five thousand, nine hundred one".