56783443759442 has 4 divisors (see below), whose sum is σ = 85175165639166. Its totient is φ = 28391721879720.

The previous prime is 56783443759429. The next prime is 56783443759463. The reversal of 56783443759442 is 24495734438765.

It is a Cunningham number, because it is equal to 7535479²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 56783443759441 + 1 = 7535479^2 + 1^2 .

It is a super-2 number, since 2×56783443759442² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14195860939859 + ... + 14195860939862.

Almost surely, 2^{56783443759442} is an apocalyptic number.

56783443759442 is a deficient number, since it is larger than the sum of its proper divisors (28391721879724).

56783443759442 is a wasteful number, since it uses less digits than its factorization.

56783443759442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28391721879723.

The product of its digits is 2438553600, while the sum is 71.

The spelling of 56783443759442 in words is "fifty-six trillion, seven hundred eighty-three billion, four hundred forty-three million, seven hundred fifty-nine thousand, four hundred forty-two".