66740074981112 has 128 divisors (see below), whose sum is σ = 141515303731200. Its totient is φ = 29296867622400.

The previous prime is 66740074981093. The next prime is 66740074981133. The reversal of 66740074981112 is 21118947004766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72102689 + ... + 73022447.

It is an arithmetic number, because the mean of its divisors is an integer number (1105588310400).

Almost surely, 2^{66740074981112} is an apocalyptic number.

66740074981112 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66740074981112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70757651865600).

66740074981112 is an abundant number, since it is smaller than the sum of its proper divisors (74775228750088).

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

66740074981112 is a wasteful number, since it uses less digits than its factorization.

66740074981112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920197 (or 920193 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 66740074981112 in words is "sixty-six trillion, seven hundred forty billion, seventy-four million, nine hundred eighty-one thousand, one hundred twelve".