66770220653196 has 48 divisors (see below), whose sum is σ = 157341202814208. Its totient is φ = 22036169880000.

The previous prime is 66770220653167. The next prime is 66770220653249. The reversal of 66770220653196 is 69135602207766.

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, 182323671 + ... + 182689521.

It is an arithmetic number, because the mean of its divisors is an integer number (3277941725296).

Almost surely, 2^{66770220653196} is an apocalyptic number.

It is an amenable number.

66770220653196 is an abundant number, since it is smaller than the sum of its proper divisors (90570982161012).

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

66770220653196 is a wasteful number, since it uses less digits than its factorization.

66770220653196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516542 (or 516540 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 60.

The spelling of 66770220653196 in words is "sixty-six trillion, seven hundred seventy billion, two hundred twenty million, six hundred fifty-three thousand, one hundred ninety-six".