36273991561 has 2 divisors, whose sum is σ = 36273991562. Its totient is φ = 36273991560.

The previous prime is 36273991477. The next prime is 36273991583. The reversal of 36273991561 is 16519937263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32220250000 + 4053741561 = 179500^2 + 63669^2 .

It is a cyclic number.

It is not a de Polignac number, because 36273991561 - 2⁷ = 36273991433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36273991499 and 36273991508.

It is not a weakly prime, because it can be changed into another prime (36273991261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18136995780 + 18136995781.

It is an arithmetic number, because the mean of its divisors is an integer number (18136995781).

Almost surely, 2^36273991561 is an apocalyptic number.

It is an amenable number.

36273991561 is a deficient number, since it is larger than the sum of its proper divisors (1).

36273991561 is an equidigital number, since it uses as much as digits as its factorization.

36273991561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 52.

The spelling of 36273991561 in words is "thirty-six billion, two hundred seventy-three million, nine hundred ninety-one thousand, five hundred sixty-one".