6545605442 has 4 divisors (see below), whose sum is σ = 9818408166. Its totient is φ = 3272802720.

The previous prime is 6545605441. The next prime is 6545605459. The reversal of 6545605442 is 2445065456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5864343241 + 681262201 = 76579^2 + 26101^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6545605442.

It is not an unprimeable number, because it can be changed into a prime (6545605441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1636401359 + ... + 1636401362.

Almost surely, 2^6545605442 is an apocalyptic number.

6545605442 is a deficient number, since it is larger than the sum of its proper divisors (3272802724).

6545605442 is a wasteful number, since it uses less digits than its factorization.

6545605442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272802723.

The product of its (nonzero) digits is 576000, while the sum is 41.

The square root of 6545605442 is about 80904.9160558244. The cubic root of 6545605442 is about 1870.6100978602.

The spelling of 6545605442 in words is "six billion, five hundred forty-five million, six hundred five thousand, four hundred forty-two".