56638042343 has 4 divisors (see below), whose sum is σ = 59618991960. Its totient is φ = 53657092728.

The previous prime is 56638042319. The next prime is 56638042387. The reversal of 56638042343 is 34324083665.

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

It is not a de Polignac number, because 56638042343 - 2²² = 56633848039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56638042294 and 56638042303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56638042943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1490474780 + ... + 1490474817.

It is an arithmetic number, because the mean of its divisors is an integer number (14904747990).

Almost surely, 2^56638042343 is an apocalyptic number.

56638042343 is a deficient number, since it is larger than the sum of its proper divisors (2980949617).

56638042343 is a wasteful number, since it uses less digits than its factorization.

56638042343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980949616.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 56638042343 in words is "fifty-six billion, six hundred thirty-eight million, forty-two thousand, three hundred forty-three".