66013666470 has 32 divisors (see below), whose sum is σ = 176036444640. Its totient is φ = 17603644320.

The previous prime is 66013666427. The next prime is 66013666471. The reversal of 66013666470 is 7466631066.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66013666471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122247261 + ... + 122247800.

It is an arithmetic number, because the mean of its divisors is an integer number (5501138895).

Almost surely, 2^66013666470 is an apocalyptic number.

66013666470 is an abundant number, since it is smaller than the sum of its proper divisors (110022778170).

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

66013666470 is a wasteful number, since it uses less digits than its factorization.

66013666470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244495077 (or 244495071 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 66013666470 in words is "sixty-six billion, thirteen million, six hundred sixty-six thousand, four hundred seventy".