36443821680 has 240 divisors, whose sum is σ = 139990129344. Its totient is φ = 8323153920.

The previous prime is 36443821591. The next prime is 36443821697. The reversal of 36443821680 is 8612834463.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8550750 + ... + 8555010.

Almost surely, 2^36443821680 is an apocalyptic number.

36443821680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36443821680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69995064672).

36443821680 is an abundant number, since it is smaller than the sum of its proper divisors (103546307664).

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

36443821680 is a wasteful number, since it uses less digits than its factorization.

36443821680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984 (or 5975 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 36443821680 in words is "thirty-six billion, four hundred forty-three million, eight hundred twenty-one thousand, six hundred eighty".