66570325206 has 64 divisors (see below), whose sum is σ = 169525370880. Its totient is φ = 16923094560.

The previous prime is 66570325201. The next prime is 66570325219. The reversal of 66570325206 is 60252307566.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66570325201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1511176 + ... + 1554603.

It is an arithmetic number, because the mean of its divisors is an integer number (2648833920).

Almost surely, 2^66570325206 is an apocalyptic number.

66570325206 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66570325206 is an abundant number, since it is smaller than the sum of its proper divisors (102955045674).

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

66570325206 is a wasteful number, since it uses less digits than its factorization.

66570325206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065849.

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 66570325206 in words is "sixty-six billion, five hundred seventy million, three hundred twenty-five thousand, two hundred six".