36644996553984 has 1440 divisors, whose sum is σ = 136355221685760. Its totient is φ = 9587994624000.

The previous prime is 36644996553973. The next prime is 36644996553989. The reversal of 36644996553984 is 48935569944663.

36644996553984 is a `hidden beast` number, since 3 + 6 + 6 + 449 + 9 + 65 + 5 + 39 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36644996553989) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 48153740164 + ... + 48153740924.

Almost surely, 2^{36644996553984} 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 36644996553984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68177610842880).

36644996553984 is an abundant number, since it is smaller than the sum of its proper divisors (99710225131776).

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

36644996553984 is an equidigital number, since it uses as much as digits as its factorization.

36644996553984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 937 counting only the distinct ones).

The product of its digits is 18139852800, while the sum is 81.

The spelling of 36644996553984 in words is "thirty-six trillion, six hundred forty-four billion, nine hundred ninety-six million, five hundred fifty-three thousand, nine hundred eighty-four".