36000011999981 has 8 divisors (see below), whose sum is σ = 36121104835200. Its totient is φ = 35879105320240.

The previous prime is 36000011999957. The next prime is 36000012000037. The reversal of 36000011999981 is 18999911000063.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36000011999981 - 2¹⁰ = 36000011998957 is a prime.

It is a super-2 number, since 2×36000011999981² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36000011999921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46151441 + ... + 46924998.

It is an arithmetic number, because the mean of its divisors is an integer number (4515138104400).

Almost surely, 2^{36000011999981} is an apocalyptic number.

It is an amenable number.

36000011999981 is a deficient number, since it is larger than the sum of its proper divisors (121092835219).

36000011999981 is an equidigital number, since it uses as much as digits as its factorization.

36000011999981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93077739.

The product of its (nonzero) digits is 944784, while the sum is 56.

The spelling of 36000011999981 in words is "thirty-six trillion, eleven million, nine hundred ninety-nine thousand, nine hundred eighty-one".