42823555671 has 16 divisors (see below), whose sum is σ = 61494088544. Its totient is φ = 26351305344.

The previous prime is 42823555667. The next prime is 42823555673. The reversal of 42823555671 is 17655532824.

It is not a de Polignac number, because 42823555671 - 2² = 42823555667 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 42823555671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42823555673) 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, 957705 + ... + 1001421.

It is an arithmetic number, because the mean of its divisors is an integer number (3843380534).

Almost surely, 2^42823555671 is an apocalyptic number.

42823555671 is a deficient number, since it is larger than the sum of its proper divisors (18670532873).

42823555671 is a wasteful number, since it uses less digits than its factorization.

42823555671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68850.

The product of its digits is 2016000, while the sum is 48.

The spelling of 42823555671 in words is "forty-two billion, eight hundred twenty-three million, five hundred fifty-five thousand, six hundred seventy-one".