42155534161 has 32 divisors (see below), whose sum is σ = 48662208000. Its totient is φ = 36236299008.

The previous prime is 42155534131. The next prime is 42155534177. The reversal of 42155534161 is 16143555124.

It is not a de Polignac number, because 42155534161 - 2⁷ = 42155534033 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 42155534161.

It is not an unprimeable number, because it can be changed into a prime (42155534131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1161000 + ... + 1196758.

It is an arithmetic number, because the mean of its divisors is an integer number (1520694000).

Almost surely, 2^42155534161 is an apocalyptic number.

It is an amenable number.

42155534161 is a deficient number, since it is larger than the sum of its proper divisors (6506673839).

42155534161 is a wasteful number, since it uses less digits than its factorization.

42155534161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35913.

The product of its digits is 72000, while the sum is 37.

The spelling of 42155534161 in words is "forty-two billion, one hundred fifty-five million, five hundred thirty-four thousand, one hundred sixty-one".