36791821640 has 64 divisors (see below), whose sum is σ = 94769136000. Its totient is φ = 12592793088.

The previous prime is 36791821607. The next prime is 36791821663. The reversal of 36791821640 is 4612819763.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52436 + ... + 276284.

It is an arithmetic number, because the mean of its divisors is an integer number (1480767750).

Almost surely, 2^36791821640 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 36791821640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47384568000).

36791821640 is an abundant number, since it is smaller than the sum of its proper divisors (57977314360).

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

36791821640 is a wasteful number, since it uses less digits than its factorization.

36791821640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224454 (or 224450 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 36791821640 in words is "thirty-six billion, seven hundred ninety-one million, eight hundred twenty-one thousand, six hundred forty".