6611557043200 has 132 divisors (see below), whose sum is σ = 16393275779320. Its totient is φ = 2643877232640.

The previous prime is 6611557043191. The next prime is 6611557043227. The reversal of 6611557043200 is 23407551166.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95683864 + ... + 95752936.

Almost surely, 2^{6611557043200} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6611557043200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8196637889660).

6611557043200 is an abundant number, since it is smaller than the sum of its proper divisors (9781718736120).

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

6611557043200 is a wasteful number, since it uses less digits than its factorization.

6611557043200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72842 (or 72819 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 6611557043200 in words is "six trillion, six hundred eleven billion, five hundred fifty-seven million, forty-three thousand, two hundred".