36155531544 has 128 divisors (see below), whose sum is σ = 99553639680. Its totient is φ = 10851276800.

The previous prime is 36155531537. The next prime is 36155531557. The reversal of 36155531544 is 44513555163.

It is a happy number.

It is a super-2 number, since 2×36155531544² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36155531496 and 36155531505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32958004 + ... + 32959100.

It is an arithmetic number, because the mean of its divisors is an integer number (777762810).

Almost surely, 2^36155531544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36155531544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49776819840).

36155531544 is an abundant number, since it is smaller than the sum of its proper divisors (63398108136).

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

36155531544 is a wasteful number, since it uses less digits than its factorization.

36155531544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201 (or 2197 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The spelling of 36155531544 in words is "thirty-six billion, one hundred fifty-five million, five hundred thirty-one thousand, five hundred forty-four".