66161269753588 has 24 divisors (see below), whose sum is σ = 118475454015072. Its totient is φ = 32311148114784.

The previous prime is 66161269753583. The next prime is 66161269753589. The reversal of 66161269753588 is 88535796216166.

It is a self number, because there is not a number n which added to its sum of digits gives 66161269753588.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66161269753583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35709606 + ... + 37516642.

It is an arithmetic number, because the mean of its divisors is an integer number (4936477250628).

Almost surely, 2^{66161269753588} is an apocalyptic number.

It is an amenable number.

66161269753588 is a deficient number, since it is larger than the sum of its proper divisors (52314184261484).

66161269753588 is a wasteful number, since it uses less digits than its factorization.

66161269753588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019951 (or 2019949 counting only the distinct ones).

The product of its digits is 783820800, while the sum is 73.

The spelling of 66161269753588 in words is "sixty-six trillion, one hundred sixty-one billion, two hundred sixty-nine million, seven hundred fifty-three thousand, five hundred eighty-eight".