542056243665 has 16 divisors (see below), whose sum is σ = 887459525568. Its totient is φ = 282373484736.

The previous prime is 542056243583. The next prime is 542056243693. The reversal of 542056243665 is 566342650245.

It is not a de Polignac number, because 542056243665 - 2¹⁵ = 542056210897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420197994 + ... + 420199283.

It is an arithmetic number, because the mean of its divisors is an integer number (55466220348).

Almost surely, 2^542056243665 is an apocalyptic number.

It is an amenable number.

542056243665 is a deficient number, since it is larger than the sum of its proper divisors (345403281903).

542056243665 is a wasteful number, since it uses less digits than its factorization.

542056243665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840397328.

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 542056243665 in words is "five hundred forty-two billion, fifty-six million, two hundred forty-three thousand, six hundred sixty-five".