42878787136166 has 8 divisors (see below), whose sum is σ = 64780901429160. Its totient is φ = 21285153326448.

The previous prime is 42878787136111. The next prime is 42878787136253. The reversal of 42878787136166 is 66163178787824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42878787136093 and 42878787136102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77120120471 + ... + 77120121026.

It is an arithmetic number, because the mean of its divisors is an integer number (8097612678645).

Almost surely, 2^{42878787136166} is an apocalyptic number.

42878787136166 is a deficient number, since it is larger than the sum of its proper divisors (21902114292994).

42878787136166 is a wasteful number, since it uses less digits than its factorization.

42878787136166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154240241638.

The product of its digits is 910393344, while the sum is 74.

The spelling of 42878787136166 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred eighty-seven million, one hundred thirty-six thousand, one hundred sixty-six".