42545560545 has 48 divisors (see below), whose sum is σ = 74836681920. Its totient is φ = 22356747648.

The previous prime is 42545560543. The next prime is 42545560549. The reversal of 42545560545 is 54506554524.

42545560545 is a `hidden beast` number, since 4 + 2 + 5 + 45 + 5 + 60 + 545 = 666.

It is not a de Polignac number, because 42545560545 - 2¹ = 42545560543 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42545560545.

It is not an unprimeable number, because it can be changed into a prime (42545560543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1377886 + ... + 1408424.

It is an arithmetic number, because the mean of its divisors is an integer number (1559097540).

Almost surely, 2^42545560545 is an apocalyptic number.

42545560545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42545560545 is a deficient number, since it is larger than the sum of its proper divisors (32291121375).

42545560545 is a wasteful number, since it uses less digits than its factorization.

42545560545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31006 (or 31003 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 45.

The spelling of 42545560545 in words is "forty-two billion, five hundred forty-five million, five hundred sixty thousand, five hundred forty-five".