66737200000 has 96 divisors (see below), whose sum is σ = 166181629320. Its totient is φ = 26694720000.

The previous prime is 66737199989. The next prime is 66737200003. The reversal of 66737200000 is 273766.

66737200000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66737200003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316579 + ... + 483421.

Almost surely, 2^66737200000 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 66737200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83090814660).

66737200000 is an abundant number, since it is smaller than the sum of its proper divisors (99444429320).

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

66737200000 is an frugal number, since it uses more digits than its factorization.

66737200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166882 (or 166850 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 31.

Adding to 66737200000 its reverse (273766), we get a palindrome (66737473766).

The spelling of 66737200000 in words is "sixty-six billion, seven hundred thirty-seven million, two hundred thousand".