42180069007779 has 16 divisors (see below), whose sum is σ = 56267883215232. Its totient is φ = 28106151752448.

The previous prime is 42180069007777. The next prime is 42180069007891. The reversal of 42180069007779 is 97770096008124.

It is not a de Polignac number, because 42180069007779 - 2¹ = 42180069007777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42180069007777) 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, 133515084 + ... + 133830630.

It is an arithmetic number, because the mean of its divisors is an integer number (3516742700952).

Almost surely, 2^{42180069007779} is an apocalyptic number.

42180069007779 is a deficient number, since it is larger than the sum of its proper divisors (14087814207453).

42180069007779 is a wasteful number, since it uses less digits than its factorization.

42180069007779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337426.

The product of its (nonzero) digits is 10668672, while the sum is 60.

The spelling of 42180069007779 in words is "forty-two trillion, one hundred eighty billion, sixty-nine million, seven thousand, seven hundred seventy-nine".