66032500736 has 160 divisors (see below), whose sum is σ = 141180138000. Its totient is φ = 30828134400.

The previous prime is 66032500717. The next prime is 66032500813. The reversal of 66032500736 is 63700523066.

It is a self number, because there is not a number n which added to its sum of digits gives 66032500736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653787086 + ... + 653787186.

Almost surely, 2^66032500736 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 66032500736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70590069000).

66032500736 is an abundant number, since it is smaller than the sum of its proper divisors (75147637264).

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

66032500736 is an frugal number, since it uses more digits than its factorization.

66032500736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 66032500736 in words is "sixty-six billion, thirty-two million, five hundred thousand, seven hundred thirty-six".