36261992509 has 4 divisors (see below), whose sum is σ = 36352421820. Its totient is φ = 36171563200.

The previous prime is 36261992471. The next prime is 36261992531. The reversal of 36261992509 is 90529916263.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34295336100 + 1966656409 = 185190^2 + 44347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36261992509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36261992539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45214054 + ... + 45214855.

It is an arithmetic number, because the mean of its divisors is an integer number (9088105455).

Almost surely, 2^36261992509 is an apocalyptic number.

It is an amenable number.

36261992509 is a deficient number, since it is larger than the sum of its proper divisors (90429311).

36261992509 is an equidigital number, since it uses as much as digits as its factorization.

36261992509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90429310.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The spelling of 36261992509 in words is "thirty-six billion, two hundred sixty-one million, nine hundred ninety-two thousand, five hundred nine".