66634267725512 has 16 divisors (see below), whose sum is σ = 126804016941360. Its totient is φ = 32819863207824.

The previous prime is 66634267725461. The next prime is 66634267725517. The reversal of 66634267725512 is 21552776243666.

It is not an unprimeable number, because it can be changed into a prime (66634267725517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62158831298 + ... + 62158832369.

It is an arithmetic number, because the mean of its divisors is an integer number (7925251058835).

Almost surely, 2^{66634267725512} is an apocalyptic number.

It is an amenable number.

66634267725512 is a deficient number, since it is larger than the sum of its proper divisors (60169749215848).

66634267725512 is a wasteful number, since it uses less digits than its factorization.

66634267725512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124317663740 (or 124317663736 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 62.

The spelling of 66634267725512 in words is "sixty-six trillion, six hundred thirty-four billion, two hundred sixty-seven million, seven hundred twenty-five thousand, five hundred twelve".