42839468661 has 16 divisors (see below), whose sum is σ = 62340217920. Its totient is φ = 25951537920.

The previous prime is 42839468621. The next prime is 42839468669. The reversal of 42839468661 is 16686493824.

It is not a de Polignac number, because 42839468661 - 2¹⁷ = 42839337589 is a prime.

It is a super-2 number, since 2×42839468661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42839468669) 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, 220276 + ... + 366333.

It is an arithmetic number, because the mean of its divisors is an integer number (3896263620).

Almost surely, 2^42839468661 is an apocalyptic number.

It is an amenable number.

42839468661 is a deficient number, since it is larger than the sum of its proper divisors (19500749259).

42839468661 is a wasteful number, since it uses less digits than its factorization.

42839468661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588836.

The product of its digits is 11943936, while the sum is 57.

The spelling of 42839468661 in words is "forty-two billion, eight hundred thirty-nine million, four hundred sixty-eight thousand, six hundred sixty-one".