36581109901836 has 12 divisors (see below), whose sum is σ = 85355923104312. Its totient is φ = 12193703300608.

The previous prime is 36581109901793. The next prime is 36581109901837. The reversal of 36581109901836 is 63810990118563.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 36581109901836.

It is not an unprimeable number, because it can be changed into a prime (36581109901837) 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, 1524212912565 + ... + 1524212912588.

It is an arithmetic number, because the mean of its divisors is an integer number (7112993592026).

Almost surely, 2^{36581109901836} is an apocalyptic number.

It is an amenable number.

36581109901836 is an abundant number, since it is smaller than the sum of its proper divisors (48774813202476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36581109901836 is a wasteful number, since it uses less digits than its factorization.

36581109901836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048425825160 (or 3048425825158 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 60.

The spelling of 36581109901836 in words is "thirty-six trillion, five hundred eighty-one billion, one hundred nine million, nine hundred one thousand, eight hundred thirty-six".