66030761200 has 120 divisors (see below), whose sum is σ = 165617971200. Its totient is φ = 25267092480.

The previous prime is 66030761189. The next prime is 66030761219. The reversal of 66030761200 is 216703066.

It is a super-2 number, since 2×66030761200² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1238289 + ... + 1290511.

It is an arithmetic number, because the mean of its divisors is an integer number (1380149760).

Almost surely, 2^66030761200 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 66030761200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82808985600).

66030761200 is an abundant number, since it is smaller than the sum of its proper divisors (99587210000).

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

66030761200 is a wasteful number, since it uses less digits than its factorization.

66030761200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52379 (or 52368 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 66030761200 in words is "sixty-six billion, thirty million, seven hundred sixty-one thousand, two hundred".