36985578864 has 80 divisors (see below), whose sum is σ = 103326720000. Its totient is φ = 11332516608.

The previous prime is 36985578857. The next prime is 36985578869. The reversal of 36985578864 is 46887558963.

It is a happy number.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36985578869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25137 + ... + 273135.

It is an arithmetic number, because the mean of its divisors is an integer number (1291584000).

Almost surely, 2^36985578864 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 36985578864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51663360000).

36985578864 is an abundant number, since it is smaller than the sum of its proper divisors (66341141136).

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

36985578864 is a wasteful number, since it uses less digits than its factorization.

36985578864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248262 (or 248256 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 69.

The spelling of 36985578864 in words is "thirty-six billion, nine hundred eighty-five million, five hundred seventy-eight thousand, eight hundred sixty-four".