36665543100 has 144 divisors (see below), whose sum is σ = 109612984320. Its totient is φ = 9457593600.

The previous prime is 36665543071. The next prime is 36665543137. The reversal of 36665543100 is 134556663.

It is a happy number.

It is a super-2 number, since 2×36665543100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1112661 + ... + 1145139.

It is an arithmetic number, because the mean of its divisors is an integer number (761201280).

Almost surely, 2^36665543100 is an apocalyptic number.

36665543100 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 36665543100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54806492160).

36665543100 is an abundant number, since it is smaller than the sum of its proper divisors (72947441220).

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

36665543100 is a wasteful number, since it uses less digits than its factorization.

36665543100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32620 (or 32613 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 36665543100 in words is "thirty-six billion, six hundred sixty-five million, five hundred forty-three thousand, one hundred".