66211260120325 has 24 divisors (see below), whose sum is σ = 83033850884040. Its totient is φ = 52367924505600.

The previous prime is 66211260120301. The next prime is 66211260120371. The reversal of 66211260120325 is 52302106211266.

It can be written as a sum of positive squares in 12 ways, for example, as 27074299670209 + 39136960450116 = 5203297^2 + 6255954^2 .

It is not a de Polignac number, because 66211260120325 - 2⁵ = 66211260120293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18036577 + ... + 21394873.

It is an arithmetic number, because the mean of its divisors is an integer number (3459743786835).

Almost surely, 2^{66211260120325} is an apocalyptic number.

It is an amenable number.

66211260120325 is a deficient number, since it is larger than the sum of its proper divisors (16822590763715).

66211260120325 is a wasteful number, since it uses less digits than its factorization.

66211260120325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367257 (or 3367252 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 66211260120325 in words is "sixty-six trillion, two hundred eleven billion, two hundred sixty million, one hundred twenty thousand, three hundred twenty-five".