66706175712 has 96 divisors (see below), whose sum is σ = 193323957120. Its totient is φ = 19970424320.

The previous prime is 66706175699. The next prime is 66706175779. The reversal of 66706175712 is 21757160766.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292887 + ... + 468182.

It is an arithmetic number, because the mean of its divisors is an integer number (2013791220).

Almost surely, 2^66706175712 is an apocalyptic number.

It is an amenable number.

66706175712 is an abundant number, since it is smaller than the sum of its proper divisors (126617781408).

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

66706175712 is a wasteful number, since it uses less digits than its factorization.

66706175712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761176 (or 761168 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 48.

The spelling of 66706175712 in words is "sixty-six billion, seven hundred six million, one hundred seventy-five thousand, seven hundred twelve".