42206171565 has 16 divisors (see below), whose sum is σ = 68022796608. Its totient is φ = 22345650816.

The previous prime is 42206171563. The next prime is 42206171629. The reversal of 42206171565 is 56517160224.

It is not a de Polignac number, because 42206171565 - 2¹ = 42206171563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206171563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10267087 + ... + 10271196.

It is an arithmetic number, because the mean of its divisors is an integer number (4251424788).

Almost surely, 2^42206171565 is an apocalyptic number.

It is an amenable number.

42206171565 is a deficient number, since it is larger than the sum of its proper divisors (25816625043).

42206171565 is a wasteful number, since it uses less digits than its factorization.

42206171565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20538428.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 42206171565 in words is "forty-two billion, two hundred six million, one hundred seventy-one thousand, five hundred sixty-five".