66146243692 has 24 divisors (see below), whose sum is σ = 119506947840. Its totient is φ = 32010762240.

The previous prime is 66146243659. The next prime is 66146243699. The reversal of 66146243692 is 29634264166.

It is a super-2 number, since 2×66146243692² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66146243699) 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, 1141717 + ... + 1198252.

It is an arithmetic number, because the mean of its divisors is an integer number (4979456160).

Almost surely, 2^66146243692 is an apocalyptic number.

It is an amenable number.

66146243692 is a deficient number, since it is larger than the sum of its proper divisors (53360704148).

66146243692 is a wasteful number, since it uses less digits than its factorization.

66146243692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340201 (or 2340199 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 49.

The spelling of 66146243692 in words is "sixty-six billion, one hundred forty-six million, two hundred forty-three thousand, six hundred ninety-two".