42878516126567 has 4 divisors (see below), whose sum is σ = 46776563047176. Its totient is φ = 38980469205960.

The previous prime is 42878516126543. The next prime is 42878516126617. The reversal of 42878516126567 is 76562161587824.

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

It is a cyclic number.

It is not a de Polignac number, because 42878516126567 - 2⁶ = 42878516126503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42878516126497 and 42878516126506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878516126867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949023460288 + ... + 1949023460309.

It is an arithmetic number, because the mean of its divisors is an integer number (11694140761794).

Almost surely, 2^{42878516126567} is an apocalyptic number.

42878516126567 is a deficient number, since it is larger than the sum of its proper divisors (3898046920609).

42878516126567 is a wasteful number, since it uses less digits than its factorization.

42878516126567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898046920608.

The product of its digits is 270950400, while the sum is 68.

The spelling of 42878516126567 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred sixteen million, one hundred twenty-six thousand, five hundred sixty-seven".