42054536161 has 4 divisors (see below), whose sum is σ = 45877675824. Its totient is φ = 38231396500.

The previous prime is 42054536137. The next prime is 42054536177. The reversal of 42054536161 is 16163545024.

42054536161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42054536161 - 2¹³ = 42054527969 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 42054536161.

It is not an unprimeable number, because it can be changed into a prime (42054536261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911569815 + ... + 1911569836.

It is an arithmetic number, because the mean of its divisors is an integer number (11469418956).

Almost surely, 2^42054536161 is an apocalyptic number.

It is an amenable number.

42054536161 is a deficient number, since it is larger than the sum of its proper divisors (3823139663).

42054536161 is a wasteful number, since it uses less digits than its factorization.

42054536161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823139662.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 42054536161 in words is "forty-two billion, fifty-four million, five hundred thirty-six thousand, one hundred sixty-one".