66495185142 has 32 divisors (see below), whose sum is σ = 136604706144. Its totient is φ = 21562848000.

The previous prime is 66495185129. The next prime is 66495185149. The reversal of 66495185142 is 24158159466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66495185149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860642 + ... + 1896042.

It is an arithmetic number, because the mean of its divisors is an integer number (4268897067).

Almost surely, 2^66495185142 is an apocalyptic number.

66495185142 is an abundant number, since it is smaller than the sum of its proper divisors (70109521002).

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

66495185142 is a wasteful number, since it uses less digits than its factorization.

66495185142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43904.

The product of its digits is 2073600, while the sum is 51.

The spelling of 66495185142 in words is "sixty-six billion, four hundred ninety-five million, one hundred eighty-five thousand, one hundred forty-two".