42647035205 has 4 divisors (see below), whose sum is σ = 51176442252. Its totient is φ = 34117628160.

The previous prime is 42647035187. The next prime is 42647035271. The reversal of 42647035205 is 50253074624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9580885924 + 33066149281 = 97882^2 + 181841^2 .

It is not a de Polignac number, because 42647035205 - 2¹⁸ = 42646773061 is a prime.

It is a super-2 number, since 2×42647035205² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4264703516 + ... + 4264703525.

It is an arithmetic number, because the mean of its divisors is an integer number (12794110563).

Almost surely, 2^42647035205 is an apocalyptic number.

It is an amenable number.

42647035205 is a deficient number, since it is larger than the sum of its proper divisors (8529407047).

42647035205 is an equidigital number, since it uses as much as digits as its factorization.

42647035205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8529407046.

The product of its (nonzero) digits is 201600, while the sum is 38.

The spelling of 42647035205 in words is "forty-two billion, six hundred forty-seven million, thirty-five thousand, two hundred five".