66570454244 has 12 divisors (see below), whose sum is σ = 133140908544. Its totient is φ = 28530194664.

The previous prime is 66570454229. The next prime is 66570454253. The reversal of 66570454244 is 44245407566.

It is a happy number.

66570454244 is an admirable number.

It is a super-2 number, since 2×66570454244² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188758084 + ... + 1188758139.

It is an arithmetic number, because the mean of its divisors is an integer number (11095075712).

Almost surely, 2^66570454244 is an apocalyptic number.

It is an amenable number.

66570454244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66570454244 is a wasteful number, since it uses less digits than its factorization.

66570454244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377516234 (or 2377516232 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 47.

The spelling of 66570454244 in words is "sixty-six billion, five hundred seventy million, four hundred fifty-four thousand, two hundred forty-four".