66575047220 has 48 divisors (see below), whose sum is σ = 152546841216. Its totient is φ = 24204432000.

The previous prime is 66575047211. The next prime is 66575047241. The reversal of 66575047220 is 2274057566.

It is a super-3 number, since 3×66575047220³ (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1236665 + ... + 1289375.

It is an arithmetic number, because the mean of its divisors is an integer number (3178059192).

Almost surely, 2^66575047220 is an apocalyptic number.

It is an amenable number.

66575047220 is an abundant number, since it is smaller than the sum of its proper divisors (85971793996).

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

66575047220 is a wasteful number, since it uses less digits than its factorization.

66575047220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58472 (or 58470 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 66575047220 in words is "sixty-six billion, five hundred seventy-five million, forty-seven thousand, two hundred twenty".