56171451423 has 4 divisors (see below), whose sum is σ = 74895268568. Its totient is φ = 37447634280.

The previous prime is 56171451421. The next prime is 56171451451. The reversal of 56171451423 is 32415417165.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56171451423 - 2¹ = 56171451421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56171451421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9361908568 + ... + 9361908573.

It is an arithmetic number, because the mean of its divisors is an integer number (18723817142).

Almost surely, 2^56171451423 is an apocalyptic number.

56171451423 is a deficient number, since it is larger than the sum of its proper divisors (18723817145).

56171451423 is a wasteful number, since it uses less digits than its factorization.

56171451423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18723817144.

The product of its digits is 100800, while the sum is 39.

Adding to 56171451423 its reverse (32415417165), we get a palindrome (88586868588).

The spelling of 56171451423 in words is "fifty-six billion, one hundred seventy-one million, four hundred fifty-one thousand, four hundred twenty-three".