36556136261 has 4 divisors (see below), whose sum is σ = 36559449900. Its totient is φ = 36552822624.

The previous prime is 36556136237. The next prime is 36556136263. The reversal of 36556136261 is 16263165563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16263165563 = 13241 ⋅1228243.

It can be written as a sum of positive squares in 2 ways, for example, as 17379148900 + 19176987361 = 131830^2 + 138481^2 .

It is a cyclic number.

It is not a de Polignac number, because 36556136261 - 2¹⁴ = 36556119877 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 (36556136263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640216 + ... + 1662353.

It is an arithmetic number, because the mean of its divisors is an integer number (9139862475).

Almost surely, 2^36556136261 is an apocalyptic number.

It is an amenable number.

36556136261 is a deficient number, since it is larger than the sum of its proper divisors (3313639).

36556136261 is a wasteful number, since it uses less digits than its factorization.

36556136261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313638.

The product of its digits is 583200, while the sum is 44.

The spelling of 36556136261 in words is "thirty-six billion, five hundred fifty-six million, one hundred thirty-six thousand, two hundred sixty-one".