66670780470 has 128 divisors (see below), whose sum is σ = 191570227200. Its totient is φ = 14527199232.

The previous prime is 66670780469. The next prime is 66670780483. The reversal of 66670780470 is 7408707666.

66670780470 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 an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 411822 + ... + 550398.

It is an arithmetic number, because the mean of its divisors is an integer number (1496642400).

Almost surely, 2^66670780470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66670780470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95785113600).

66670780470 is an abundant number, since it is smaller than the sum of its proper divisors (124899446730).

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

66670780470 is a wasteful number, since it uses less digits than its factorization.

66670780470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138702.

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 66670780470 in words is "sixty-six billion, six hundred seventy million, seven hundred eighty thousand, four hundred seventy".