66104812357577 has 16 divisors (see below), whose sum is σ = 75582591397632. Its totient is φ = 56635593940800.

The previous prime is 66104812357561. The next prime is 66104812357579. The reversal of 66104812357577 is 77575321840166.

It is not a de Polignac number, because 66104812357577 - 2⁴ = 66104812357561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66104812357579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480159083 + ... + 480296735.

It is an arithmetic number, because the mean of its divisors is an integer number (4723911962352).

Almost surely, 2^{66104812357577} is an apocalyptic number.

It is an amenable number.

66104812357577 is a deficient number, since it is larger than the sum of its proper divisors (9477779040055).

66104812357577 is a wasteful number, since it uses less digits than its factorization.

66104812357577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168248.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 66104812357577 in words is "sixty-six trillion, one hundred four billion, eight hundred twelve million, three hundred fifty-seven thousand, five hundred seventy-seven".