66607730000 has 400 divisors, whose sum is σ = 197422304640. Its totient is φ = 21254400000.

The previous prime is 66607729987. The next prime is 66607730023. The reversal of 66607730000 is 3770666.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 81129590 + ... + 81130410.

Almost surely, 2^66607730000 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 66607730000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98711152320).

66607730000 is an abundant number, since it is smaller than the sum of its proper divisors (130814574640).

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

66607730000 is a wasteful number, since it uses less digits than its factorization.

66607730000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The spelling of 66607730000 in words is "sixty-six billion, six hundred seven million, seven hundred thirty thousand".