42513426809 has 32 divisors (see below), whose sum is σ = 50220124416. Its totient is φ = 35232583680.

The previous prime is 42513426793. The next prime is 42513426827. The reversal of 42513426809 is 90862431524.

It is not a de Polignac number, because 42513426809 - 2⁴ = 42513426793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42513426809.

It is not an unprimeable number, because it can be changed into a prime (42513426899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15999209 + ... + 16001865.

It is an arithmetic number, because the mean of its divisors is an integer number (1569378888).

Almost surely, 2^42513426809 is an apocalyptic number.

It is an amenable number.

42513426809 is a deficient number, since it is larger than the sum of its proper divisors (7706697607).

42513426809 is a wasteful number, since it uses less digits than its factorization.

42513426809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 42513426809 in words is "forty-two billion, five hundred thirteen million, four hundred twenty-six thousand, eight hundred nine".