66995344470 has 32 divisors (see below), whose sum is σ = 160832819808. Its totient is φ = 17860537088.

The previous prime is 66995344469. The next prime is 66995344477. The reversal of 66995344470 is 7444359966.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66995344470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66995344477) 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, 193359 + ... + 413978.

It is an arithmetic number, because the mean of its divisors is an integer number (5026025619).

Almost surely, 2^66995344470 is an apocalyptic number.

66995344470 is an abundant number, since it is smaller than the sum of its proper divisors (93837475338).

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

66995344470 is a wasteful number, since it uses less digits than its factorization.

66995344470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611024.

The product of its (nonzero) digits is 19595520, while the sum is 57.

The spelling of 66995344470 in words is "sixty-six billion, nine hundred ninety-five million, three hundred forty-four thousand, four hundred seventy".