542044542161 has 64 divisors (see below), whose sum is σ = 610743767040. Its totient is φ = 479201184000.

The previous prime is 542044542133. The next prime is 542044542163. The reversal of 542044542161 is 161245440245.

It is a cyclic number.

It is not a de Polignac number, because 542044542161 - 2⁶ = 542044542097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542044542163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 859024316 + ... + 859024946.

It is an arithmetic number, because the mean of its divisors is an integer number (9542871360).

Almost surely, 2^542044542161 is an apocalyptic number.

It is an amenable number.

542044542161 is a deficient number, since it is larger than the sum of its proper divisors (68699224879).

542044542161 is a wasteful number, since it uses less digits than its factorization.

542044542161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 542044542161 in words is "five hundred forty-two billion, forty-four million, five hundred forty-two thousand, one hundred sixty-one".