42878535236438 has 32 divisors (see below), whose sum is σ = 74554738346880. Its totient is φ = 18278939410560.

The previous prime is 42878535236371. The next prime is 42878535236473. The reversal of 42878535236438 is 83463253587824.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202453328 + ... + 202665011.

It is an arithmetic number, because the mean of its divisors is an integer number (2329835573340).

Almost surely, 2^{42878535236438} is an apocalyptic number.

42878535236438 is a deficient number, since it is larger than the sum of its proper divisors (31676203110442).

42878535236438 is a wasteful number, since it uses less digits than its factorization.

42878535236438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405118652.

The product of its digits is 928972800, while the sum is 68.

The spelling of 42878535236438 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred thirty-five million, two hundred thirty-six thousand, four hundred thirty-eight".