542689849689 has 16 divisors (see below), whose sum is σ = 779328513600. Its totient is φ = 333928034496.

The previous prime is 542689849687. The next prime is 542689849727. The reversal of 542689849689 is 986948986245.

It is not a de Polignac number, because 542689849689 - 2¹ = 542689849687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542689849687) 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, 348174 + ... + 1098455.

It is an arithmetic number, because the mean of its divisors is an integer number (48708032100).

Almost surely, 2^542689849689 is an apocalyptic number.

It is an amenable number.

542689849689 is a deficient number, since it is larger than the sum of its proper divisors (236638663911).

542689849689 is a wasteful number, since it uses less digits than its factorization.

542689849689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456264.

The product of its digits is 2149908480, while the sum is 78.

The spelling of 542689849689 in words is "five hundred forty-two billion, six hundred eighty-nine million, eight hundred forty-nine thousand, six hundred eighty-nine".