36231245509 has 2 divisors, whose sum is σ = 36231245510. Its totient is φ = 36231245508.

The previous prime is 36231245471. The next prime is 36231245527. The reversal of 36231245509 is 90554213263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23110688484 + 13120557025 = 152022^2 + 114545^2 .

It is a cyclic number.

It is not a de Polignac number, because 36231245509 - 2²¹ = 36229148357 is a prime.

It is a super-2 number, since 2×36231245509² (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 (36231245569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18115622754 + 18115622755.

It is an arithmetic number, because the mean of its divisors is an integer number (18115622755).

Almost surely, 2^36231245509 is an apocalyptic number.

It is an amenable number.

36231245509 is a deficient number, since it is larger than the sum of its proper divisors (1).

36231245509 is an equidigital number, since it uses as much as digits as its factorization.

36231245509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 36231245509 in words is "thirty-six billion, two hundred thirty-one million, two hundred forty-five thousand, five hundred nine".