36613115261 has 2 divisors, whose sum is σ = 36613115262. Its totient is φ = 36613115260.

The previous prime is 36613115249. The next prime is 36613115267. The reversal of 36613115261 is 16251131663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18873539161 + 17739576100 = 137381^2 + 133190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36613115261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36613115267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18306557630 + 18306557631.

It is an arithmetic number, because the mean of its divisors is an integer number (18306557631).

Almost surely, 2^36613115261 is an apocalyptic number.

It is an amenable number.

36613115261 is a deficient number, since it is larger than the sum of its proper divisors (1).

36613115261 is an equidigital number, since it uses as much as digits as its factorization.

36613115261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The spelling of 36613115261 in words is "thirty-six billion, six hundred thirteen million, one hundred fifteen thousand, two hundred sixty-one".