36865636920 has 384 divisors, whose sum is σ = 149479948800. Its totient is φ = 7982654976.

The previous prime is 36865636919. The next prime is 36865636921. The reversal of 36865636920 is 2963656863.

36865636920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (36865636919) and next prime (36865636921).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36865636921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1278502 + ... + 1307018.

It is an arithmetic number, because the mean of its divisors is an integer number (389270700).

Almost surely, 2^36865636920 is an apocalyptic number.

36865636920 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 36865636920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74739974400).

36865636920 is an abundant number, since it is smaller than the sum of its proper divisors (112614311880).

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

36865636920 is a wasteful number, since it uses less digits than its factorization.

36865636920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28569 (or 28553 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 36865636920 in words is "thirty-six billion, eight hundred sixty-five million, six hundred thirty-six thousand, nine hundred twenty".