66758485197 has 8 divisors (see below), whose sum is σ = 89048242080. Its totient is φ = 44487192560.

The previous prime is 66758485193. The next prime is 66758485219. The reversal of 66758485197 is 79158485766.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66758485197 - 2² = 66758485193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66758485193) 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, 4607622 + ... + 4622087.

It is an arithmetic number, because the mean of its divisors is an integer number (11131030260).

Almost surely, 2^66758485197 is an apocalyptic number.

It is an amenable number.

66758485197 is a deficient number, since it is larger than the sum of its proper divisors (22289756883).

66758485197 is a wasteful number, since it uses less digits than its factorization.

66758485197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232123.

The product of its digits is 101606400, while the sum is 66.

The spelling of 66758485197 in words is "sixty-six billion, seven hundred fifty-eight million, four hundred eighty-five thousand, one hundred ninety-seven".