42550205520 has 40 divisors (see below), whose sum is σ = 131905637856. Its totient is φ = 11346721408.

The previous prime is 42550205497. The next prime is 42550205521. The reversal of 42550205520 is 2550205524.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42550205521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88646022 + ... + 88646501.

Almost surely, 2^42550205520 is an apocalyptic number.

42550205520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42550205520 is an abundant number, since it is smaller than the sum of its proper divisors (89355432336).

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

42550205520 is a wasteful number, since it uses less digits than its factorization.

42550205520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177292539 (or 177292533 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The spelling of 42550205520 in words is "forty-two billion, five hundred fifty million, two hundred five thousand, five hundred twenty".