42758822178 has 162 divisors, whose sum is σ = 102228239763. Its totient is φ = 12913885440.

The previous prime is 42758822177. The next prime is 42758822203. The reversal of 42758822178 is 87122885724.

42758822178 is a `hidden beast` number, since 4 + 27 + 588 + 22 + 17 + 8 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 9004681449 + 33754140729 = 94893^2 + 183723^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=146217.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42758822173) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 700964268 + ... + 700964328.

Almost surely, 2^42758822178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42758822178

42758822178 is an abundant number, since it is smaller than the sum of its proper divisors (59469417585).

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

42758822178 is a wasteful number, since it uses less digits than its factorization.

42758822178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 130 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 54.

The spelling of 42758822178 in words is "forty-two billion, seven hundred fifty-eight million, eight hundred twenty-two thousand, one hundred seventy-eight".