66134412852 has 12 divisors (see below), whose sum is σ = 154313630016. Its totient is φ = 22044804280.

The previous prime is 66134412833. The next prime is 66134412859. The reversal of 66134412852 is 25821443166.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66134412859) 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, 2755600524 + ... + 2755600547.

It is an arithmetic number, because the mean of its divisors is an integer number (12859469168).

Almost surely, 2^66134412852 is an apocalyptic number.

It is an amenable number.

66134412852 is an abundant number, since it is smaller than the sum of its proper divisors (88179217164).

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

66134412852 is a wasteful number, since it uses less digits than its factorization.

66134412852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511201078 (or 5511201076 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The spelling of 66134412852 in words is "sixty-six billion, one hundred thirty-four million, four hundred twelve thousand, eight hundred fifty-two".