42578668008 has 128 divisors (see below), whose sum is σ = 119998800000. Its totient is φ = 14161542336.

The previous prime is 42578667991. The next prime is 42578668019. The reversal of 42578668008 is 80086687524.

42578668008 is a `hidden beast` number, since 4 + 2 + 578 + 6 + 68 + 0 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8728066 + ... + 8732942.

It is an arithmetic number, because the mean of its divisors is an integer number (937490625).

Almost surely, 2^42578668008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42578668008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59999400000).

42578668008 is an abundant number, since it is smaller than the sum of its proper divisors (77420131992).

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

42578668008 is an equidigital number, since it uses as much as digits as its factorization.

42578668008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5403 (or 5381 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 42578668008 in words is "forty-two billion, five hundred seventy-eight million, six hundred sixty-eight thousand, eight".