42554646605 has 8 divisors (see below), whose sum is σ = 51073134072. Its totient is φ = 34038678528.

The previous prime is 42554646599. The next prime is 42554646637. The reversal of 42554646605 is 50664645524.

It can be written as a sum of positive squares in 4 ways, for example, as 2279776009 + 40274870596 = 47747^2 + 200686^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42554646605 - 2¹² = 42554642509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42554646605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592484 + ... + 660413.

It is an arithmetic number, because the mean of its divisors is an integer number (6384141759).

Almost surely, 2^42554646605 is an apocalyptic number.

It is an amenable number.

42554646605 is a deficient number, since it is larger than the sum of its proper divisors (8518487467).

42554646605 is a wasteful number, since it uses less digits than its factorization.

42554646605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259695.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 42554646605 in words is "forty-two billion, five hundred fifty-four million, six hundred forty-six thousand, six hundred five".