66152520165546 has 48 divisors (see below), whose sum is σ = 144426585457440. Its totient is φ = 21882210086880.

The previous prime is 66152520165533. The next prime is 66152520165547. The reversal of 66152520165546 is 64556102525166.

66152520165546 is a `hidden beast` number, since 6 + 6 + 1 + 5 + 2 + 520 + 1 + 65 + 54 + 6 = 666.

66152520165546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66152520165492 and 66152520165501.

It is not an unprimeable number, because it can be changed into a prime (66152520165547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226040200 + ... + 226332668.

It is an arithmetic number, because the mean of its divisors is an integer number (3008887197030).

Almost surely, 2^{66152520165546} is an apocalyptic number.

66152520165546 is an abundant number, since it is smaller than the sum of its proper divisors (78274065291894).

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

66152520165546 is a wasteful number, since it uses less digits than its factorization.

66152520165546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388531 (or 388528 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 54.

The spelling of 66152520165546 in words is "sixty-six trillion, one hundred fifty-two billion, five hundred twenty million, one hundred sixty-five thousand, five hundred forty-six".