66197242092 has 24 divisors (see below), whose sum is σ = 154532570416. Its totient is φ = 22055413248.

The previous prime is 66197242081. The next prime is 66197242099. The reversal of 66197242092 is 29024279166.

It is not an unprimeable number, because it can be changed into a prime (66197242099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1265053 + ... + 1316340.

Almost surely, 2^66197242092 is an apocalyptic number.

It is an amenable number.

66197242092 is an abundant number, since it is smaller than the sum of its proper divisors (88335328324).

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

66197242092 is a wasteful number, since it uses less digits than its factorization.

66197242092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583537 (or 2583535 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 66197242092 in words is "sixty-six billion, one hundred ninety-seven million, two hundred forty-two thousand, ninety-two".