66180352131582 has 64 divisors (see below), whose sum is σ = 151189901533440. Its totient is φ = 19144175731200.

The previous prime is 66180352131541. The next prime is 66180352131589. The reversal of 66180352131582 is 28513125308166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66180352131589) 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, 170249019 + ... + 170637302.

It is an arithmetic number, because the mean of its divisors is an integer number (2362342211460).

Almost surely, 2^{66180352131582} is an apocalyptic number.

66180352131582 is an abundant number, since it is smaller than the sum of its proper divisors (85009549401858).

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

66180352131582 is a wasteful number, since it uses less digits than its factorization.

66180352131582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340886489.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 66180352131582 in words is "sixty-six trillion, one hundred eighty billion, three hundred fifty-two million, one hundred thirty-one thousand, five hundred eighty-two".