556059787961 has 4 divisors (see below), whose sum is σ = 556063537524. Its totient is φ = 556056038400.

The previous prime is 556059787957. The next prime is 556059787967. The reversal of 556059787961 is 169787950655.

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

It can be written as a sum of positive squares in 2 ways, for example, as 423825738361 + 132234049600 = 651019^2 + 363640^2 .

It is a cyclic number.

It is not a de Polignac number, because 556059787961 - 2² = 556059787957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 556059787891 and 556059787900.

It is not an unprimeable number, because it can be changed into a prime (556059787967) 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, 1642760 + ... + 1952121.

It is an arithmetic number, because the mean of its divisors is an integer number (139015884381).

Almost surely, 2^556059787961 is an apocalyptic number.

It is an amenable number.

556059787961 is a deficient number, since it is larger than the sum of its proper divisors (3749563).

556059787961 is a wasteful number, since it uses less digits than its factorization.

556059787961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749562.

The product of its (nonzero) digits is 142884000, while the sum is 68.

The spelling of 556059787961 in words is "five hundred fifty-six billion, fifty-nine million, seven hundred eighty-seven thousand, nine hundred sixty-one".