66062446428880 has 80 divisors (see below), whose sum is σ = 167560505584128. Its totient is φ = 24022404032000.

The previous prime is 66062446428851. The next prime is 66062446428887. The reversal of 66062446428880 is 8882464426066.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66062446428887) 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, 76191390 + ... + 77053570.

Almost surely, 2^{66062446428880} is an apocalyptic number.

It is an amenable number.

66062446428880 is an abundant number, since it is smaller than the sum of its proper divisors (101498059155248).

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

66062446428880 is a wasteful number, since it uses less digits than its factorization.

66062446428880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949276 (or 949270 counting only the distinct ones).

The product of its (nonzero) digits is 169869312, while the sum is 64.

The spelling of 66062446428880 in words is "sixty-six trillion, sixty-two billion, four hundred forty-six million, four hundred twenty-eight thousand, eight hundred eighty".