36288734820581 has 16 divisors (see below), whose sum is σ = 37577619878400. Its totient is φ = 35007371256000.

The previous prime is 36288734820553. The next prime is 36288734820593. The reversal of 36288734820581 is 18502843788263.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 36288734820581 - 2¹⁸ = 36288734558437 is a prime.

It is a super-2 number, since 2×36288734820581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36288734820781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15824975 + ... + 17972403.

It is an arithmetic number, because the mean of its divisors is an integer number (2348601242400).

Almost surely, 2^{36288734820581} is an apocalyptic number.

36288734820581 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

36288734820581 is a deficient number, since it is larger than the sum of its proper divisors (1288885057819).

36288734820581 is a wasteful number, since it uses less digits than its factorization.

36288734820581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149180.

The product of its (nonzero) digits is 123863040, while the sum is 65.

The spelling of 36288734820581 in words is "thirty-six trillion, two hundred eighty-eight billion, seven hundred thirty-four million, eight hundred twenty thousand, five hundred eighty-one".