65775123612 has 36 divisors (see below), whose sum is σ = 181379887416. Its totient is φ = 19931855520.

The previous prime is 65775123569. The next prime is 65775123653. The reversal of 65775123612 is 21632157756.

It is a happy number.

65775123612 is a `hidden beast` number, since 6 + 5 + 7 + 7 + 5 + 1 + 23 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83049003 + ... + 83049794.

It is an arithmetic number, because the mean of its divisors is an integer number (5038330206).

Almost surely, 2^65775123612 is an apocalyptic number.

It is an amenable number.

65775123612 is an abundant number, since it is smaller than the sum of its proper divisors (115604763804).

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

65775123612 is a wasteful number, since it uses less digits than its factorization.

65775123612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166098818 (or 166098813 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The spelling of 65775123612 in words is "sixty-five billion, seven hundred seventy-five million, one hundred twenty-three thousand, six hundred twelve".