36737644878 has 128 divisors (see below), whose sum is σ = 95629870080. Its totient is φ = 10329984000.

The previous prime is 36737644859. The next prime is 36737644891. The reversal of 36737644878 is 87844673763.

It is a happy number.

36737644878 is a `hidden beast` number, since 3 + 67 + 37 + 64 + 487 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 691338 + ... + 742578.

It is an arithmetic number, because the mean of its divisors is an integer number (747108360).

Almost surely, 2^36737644878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36737644878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47814935040).

36737644878 is an abundant number, since it is smaller than the sum of its proper divisors (58892225202).

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

36737644878 is a wasteful number, since it uses less digits than its factorization.

36737644878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51351 (or 51345 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 63.

The spelling of 36737644878 in words is "thirty-six billion, seven hundred thirty-seven million, six hundred forty-four thousand, eight hundred seventy-eight".