66414675580 has 24 divisors (see below), whose sum is σ = 152149984560. Its totient is φ = 24150791040.

The previous prime is 66414675563. The next prime is 66414675581. The reversal of 66414675580 is 8557641466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66414675581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150942225 + ... + 150942664.

It is an arithmetic number, because the mean of its divisors is an integer number (6339582690).

Almost surely, 2^66414675580 is an apocalyptic number.

It is an amenable number.

66414675580 is an abundant number, since it is smaller than the sum of its proper divisors (85735308980).

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

66414675580 is a wasteful number, since it uses less digits than its factorization.

66414675580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301884909 (or 301884907 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 66414675580 in words is "sixty-six billion, four hundred fourteen million, six hundred seventy-five thousand, five hundred eighty".