42510808081 has 16 divisors (see below), whose sum is σ = 49152355200. Its totient is φ = 36011783808.

The previous prime is 42510808027. The next prime is 42510808111. The reversal of 42510808081 is 18080801524.

It is a happy number.

It is not a de Polignac number, because 42510808081 - 2¹⁷ = 42510677009 is a prime.

It is a super-2 number, since 2×42510808081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42510808081.

It is not an unprimeable number, because it can be changed into a prime (42510800081) 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 15 ways as a sum of consecutive naturals, for example, 1442611 + ... + 1471783.

It is an arithmetic number, because the mean of its divisors is an integer number (3072022200).

Almost surely, 2^42510808081 is an apocalyptic number.

It is an amenable number.

42510808081 is a deficient number, since it is larger than the sum of its proper divisors (6641547119).

42510808081 is a wasteful number, since it uses less digits than its factorization.

42510808081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31608.

The product of its (nonzero) digits is 20480, while the sum is 37.

The spelling of 42510808081 in words is "forty-two billion, five hundred ten million, eight hundred eight thousand, eighty-one".