66275918712 has 64 divisors (see below), whose sum is σ = 193789248000. Its totient is φ = 20929236192.

The previous prime is 66275918689. The next prime is 66275918789. The reversal of 66275918712 is 21781957266.

66275918712 is a `hidden beast` number, since 6 + 627 + 5 + 9 + 1 + 8 + 7 + 1 + 2 = 666.

It is a super-2 number, since 2×66275918712² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 8070448 + ... + 8078655.

It is an arithmetic number, because the mean of its divisors is an integer number (3027957000).

Almost surely, 2^66275918712 is an apocalyptic number.

It is an amenable number.

66275918712 is an abundant number, since it is smaller than the sum of its proper divisors (127513329288).

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

66275918712 is a wasteful number, since it uses less digits than its factorization.

66275918712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16149137 (or 16149127 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 66275918712 in words is "sixty-six billion, two hundred seventy-five million, nine hundred eighteen thousand, seven hundred twelve".