42505530655 has 16 divisors (see below), whose sum is σ = 58589213760. Its totient is φ = 28998692352.

The previous prime is 42505530649. The next prime is 42505530677. The reversal of 42505530655 is 55603550524.

It is a happy number.

It is not a de Polignac number, because 42505530655 - 2⁵ = 42505530623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3075450 + ... + 3089239.

It is an arithmetic number, because the mean of its divisors is an integer number (3661825860).

Almost surely, 2^42505530655 is an apocalyptic number.

42505530655 is a deficient number, since it is larger than the sum of its proper divisors (16083683105).

42505530655 is a wasteful number, since it uses less digits than its factorization.

42505530655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164898.

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 42505530655 in words is "forty-two billion, five hundred five million, five hundred thirty thousand, six hundred fifty-five".