66706667010 has 96 divisors (see below), whose sum is σ = 183269399040. Its totient is φ = 16799612544.

The previous prime is 66706666973. The next prime is 66706667017. The reversal of 66706667010 is 1076660766.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (66706667017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40429 + ... + 367488.

It is an arithmetic number, because the mean of its divisors is an integer number (1909056240).

Almost surely, 2^66706667010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66706667010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91634699520).

66706667010 is an abundant number, since it is smaller than the sum of its proper divisors (116562732030).

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

66706667010 is a wasteful number, since it uses less digits than its factorization.

66706667010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408032 (or 408029 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 66706667010 in words is "sixty-six billion, seven hundred six million, six hundred sixty-seven thousand, ten".