66252506515142 has 4 divisors (see below), whose sum is σ = 99378759772716. Its totient is φ = 33126253257570.

The previous prime is 66252506515073. The next prime is 66252506515157. The reversal of 66252506515142 is 24151560525266.

66252506515142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16563126628784 + ... + 16563126628787.

It is an arithmetic number, because the mean of its divisors is an integer number (24844689943179).

Almost surely, 2^{66252506515142} is an apocalyptic number.

66252506515142 is a deficient number, since it is larger than the sum of its proper divisors (33126253257574).

66252506515142 is a wasteful number, since it uses less digits than its factorization.

66252506515142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33126253257573.

The product of its (nonzero) digits is 4320000, while the sum is 50.

The spelling of 66252506515142 in words is "sixty-six trillion, two hundred fifty-two billion, five hundred six million, five hundred fifteen thousand, one hundred forty-two".