36894199680 has 512 divisors, whose sum is σ = 149011228800. Its totient is φ = 8546549760.

The previous prime is 36894199669. The next prime is 36894199681. The reversal of 36894199680 is 8699149863.

It is a happy number.

36894199680 is a `hidden beast` number, since 368 + 9 + 4 + 199 + 6 + 80 = 666.

It is a super-2 number, since 2×36894199680² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36894199681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3814050 + ... + 3823710.

Almost surely, 2^36894199680 is an apocalyptic number.

36894199680 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 36894199680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74505614400).

36894199680 is an abundant number, since it is smaller than the sum of its proper divisors (112117029120).

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

36894199680 is a wasteful number, since it uses less digits than its factorization.

36894199680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719 (or 9701 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 36894199680 in words is "thirty-six billion, eight hundred ninety-four million, one hundred ninety-nine thousand, six hundred eighty".