7426557856 has 12 divisors (see below), whose sum is σ = 14621035842. Its totient is φ = 3713278912.

The previous prime is 7426557851. The next prime is 7426557857. The reversal of 7426557856 is 6587556247.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4348083600 + 3078474256 = 65940^2 + 55484^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7426557797 and 7426557806.

It is not an unprimeable number, because it can be changed into a prime (7426557851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116039935 + ... + 116039998.

Almost surely, 2^7426557856 is an apocalyptic number.

It is an amenable number.

7426557856 is a deficient number, since it is larger than the sum of its proper divisors (7194477986).

7426557856 is a wasteful number, since it uses less digits than its factorization.

7426557856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232079943 (or 232079935 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 55.

The square root of 7426557856 is about 86177.4788213255. The cubic root of 7426557856 is about 1951.0236007487.

The spelling of 7426557856 in words is "seven billion, four hundred twenty-six million, five hundred fifty-seven thousand, eight hundred fifty-six".