66593413890 has 48 divisors (see below), whose sum is σ = 173157880896. Its totient is φ = 17756704800.

The previous prime is 66593413879. The next prime is 66593413891. The reversal of 66593413890 is 9831439566.

66593413890 is a `hidden beast` number, since 6 + 6 + 593 + 41 + 3 + 8 + 9 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (66593413891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1333675 + ... + 1382705.

It is an arithmetic number, because the mean of its divisors is an integer number (3607455852).

Almost surely, 2^66593413890 is an apocalyptic number.

66593413890 is an abundant number, since it is smaller than the sum of its proper divisors (106564467006).

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

66593413890 is a wasteful number, since it uses less digits than its factorization.

66593413890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64135 (or 64132 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 66593413890 in words is "sixty-six billion, five hundred ninety-three million, four hundred thirteen thousand, eight hundred ninety".