66057426056 has 32 divisors (see below), whose sum is σ = 124540416000. Its totient is φ = 32847015936.

The previous prime is 66057426013. The next prime is 66057426067. The reversal of 66057426056 is 65062475066.

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 66057426056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1447865 + ... + 1492791.

It is an arithmetic number, because the mean of its divisors is an integer number (3891888000).

Almost surely, 2^66057426056 is an apocalyptic number.

It is an amenable number.

66057426056 is a deficient number, since it is larger than the sum of its proper divisors (58482989944).

66057426056 is a wasteful number, since it uses less digits than its factorization.

66057426056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45941 (or 45937 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 66057426056 in words is "sixty-six billion, fifty-seven million, four hundred twenty-six thousand, fifty-six".