42578979009 has 8 divisors (see below), whose sum is σ = 64882253760. Its totient is φ = 24330845136.

The previous prime is 42578979007. The next prime is 42578979013. The reversal of 42578979009 is 90097987524.

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

It is not a de Polignac number, because 42578979009 - 2¹ = 42578979007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42578979007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013785194 + ... + 1013785235.

It is an arithmetic number, because the mean of its divisors is an integer number (8110281720).

Almost surely, 2^42578979009 is an apocalyptic number.

It is an amenable number.

42578979009 is a deficient number, since it is larger than the sum of its proper divisors (22303274751).

42578979009 is a wasteful number, since it uses less digits than its factorization.

42578979009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027570439.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 42578979009 in words is "forty-two billion, five hundred seventy-eight million, nine hundred seventy-nine thousand, nine".