36661718016 has 704 divisors, whose sum is σ = 143469480960. Its totient is φ = 8953528320.

The previous prime is 36661717987. The next prime is 36661718057. The reversal of 36661718016 is 61081716663.

It is a tau number, because it is divible by the number of its divisors (704).

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, 36190726 + ... + 36191738.

Almost surely, 2^36661718016 is an apocalyptic number.

36661718016 is a gapful number since it is divisible by the number (36) 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 36661718016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71734740480).

36661718016 is an abundant number, since it is smaller than the sum of its proper divisors (106807762944).

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

36661718016 is a wasteful number, since it uses less digits than its factorization.

36661718016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 36661718016 in words is "thirty-six billion, six hundred sixty-one million, seven hundred eighteen thousand, sixteen".