10565556557 has 8 divisors (see below), whose sum is σ = 10682765184. Its totient is φ = 10448629488.

The previous prime is 10565556509. The next prime is 10565556577. The reversal of 10565556557 is 75565556501.

10565556557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10565556557 - 2¹⁴ = 10565540173 is a prime.

It is a super-2 number, since 2×10565556557² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10565556577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5528 + ... + 145470.

It is an arithmetic number, because the mean of its divisors is an integer number (1335345648).

Almost surely, 2^10565556557 is an apocalyptic number.

It is an amenable number.

10565556557 is a deficient number, since it is larger than the sum of its proper divisors (117208627).

10565556557 is a wasteful number, since it uses less digits than its factorization.

10565556557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140779.

The product of its (nonzero) digits is 3937500, while the sum is 50.

The spelling of 10565556557 in words is "ten billion, five hundred sixty-five million, five hundred fifty-six thousand, five hundred fifty-seven".