36689846640 has 320 divisors, whose sum is σ = 124165386240. Its totient is φ = 8928092160.

The previous prime is 36689846591. The next prime is 36689846651. The reversal of 36689846640 is 4664898663.

It is a super-2 number, since 2×36689846640² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 39156252 + ... + 39157188.

It is an arithmetic number, because the mean of its divisors is an integer number (388016832).

Almost surely, 2^36689846640 is an apocalyptic number.

36689846640 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 36689846640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62082693120).

36689846640 is an abundant number, since it is smaller than the sum of its proper divisors (87475539600).

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

36689846640 is a wasteful number, since it uses less digits than its factorization.

36689846640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 60.

The spelling of 36689846640 in words is "thirty-six billion, six hundred eighty-nine million, eight hundred forty-six thousand, six hundred forty".