45142272538638 has 16 divisors (see below), whose sum is σ = 98492230993536. Its totient is φ = 13679476526840.

The previous prime is 45142272538633. The next prime is 45142272538673. The reversal of 45142272538638 is 83683527224154.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45142272538633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341986913106 + ... + 341986913237.

It is an arithmetic number, because the mean of its divisors is an integer number (6155764437096).

Almost surely, 2^{45142272538638} is an apocalyptic number.

45142272538638 is an abundant number, since it is smaller than the sum of its proper divisors (53349958454898).

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

45142272538638 is a wasteful number, since it uses less digits than its factorization.

45142272538638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683973826359.

The product of its digits is 77414400, while the sum is 60.

The spelling of 45142272538638 in words is "forty-five trillion, one hundred forty-two billion, two hundred seventy-two million, five hundred thirty-eight thousand, six hundred thirty-eight".