42565415808 has 32 divisors (see below), whose sum is σ = 113064386760. Its totient is φ = 14188471808.

The previous prime is 42565415747. The next prime is 42565415843. The reversal of 42565415808 is 80851456524.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55423335 + ... + 55424102.

Almost surely, 2^42565415808 is an apocalyptic number.

42565415808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42565415808 is an abundant number, since it is smaller than the sum of its proper divisors (70498970952).

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

42565415808 is a wasteful number, since it uses less digits than its factorization.

42565415808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110847454 (or 110847442 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 48.

The spelling of 42565415808 in words is "forty-two billion, five hundred sixty-five million, four hundred fifteen thousand, eight hundred eight".