66051453140 has 12 divisors (see below), whose sum is σ = 138708051636. Its totient is φ = 26420581248.

The previous prime is 66051453137. The next prime is 66051453197. The reversal of 66051453140 is 4135415066.

66051453140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46553240644 + 19498212496 = 215762^2 + 139636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66051453140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651286309 + ... + 1651286348.

It is an arithmetic number, because the mean of its divisors is an integer number (11559004303).

Almost surely, 2^66051453140 is an apocalyptic number.

It is an amenable number.

66051453140 is an abundant number, since it is smaller than the sum of its proper divisors (72656598496).

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

66051453140 is a wasteful number, since it uses less digits than its factorization.

66051453140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302572666 (or 3302572664 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 66051453140 in words is "sixty-six billion, fifty-one million, four hundred fifty-three thousand, one hundred forty".