42554536605 has 48 divisors (see below), whose sum is σ = 85889082240. Its totient is φ = 19086447744.

The previous prime is 42554536603. The next prime is 42554536649. The reversal of 42554536605 is 50663545524.

42554536605 is a `hidden beast` number, since 4 + 2 + 5 + 5 + 4 + 5 + 36 + 605 = 666.

It is not a de Polignac number, because 42554536605 - 2¹ = 42554536603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42554536603) 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 47 ways as a sum of consecutive naturals, for example, 1257775 + ... + 1291164.

It is an arithmetic number, because the mean of its divisors is an integer number (1789355880).

Almost surely, 2^42554536605 is an apocalyptic number.

42554536605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42554536605 is an abundant number, since it is smaller than the sum of its proper divisors (43334545635).

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

42554536605 is a wasteful number, since it uses less digits than its factorization.

42554536605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549010 (or 2549007 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 42554536605 in words is "forty-two billion, five hundred fifty-four million, five hundred thirty-six thousand, six hundred five".