10506557858 has 4 divisors (see below), whose sum is σ = 15759836790. Its totient is φ = 5253278928.

The previous prime is 10506557797. The next prime is 10506557879. The reversal of 10506557858 is 85875560501.

10506557858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 6479767009 + 4026790849 = 80497^2 + 63457^2 .

It is a super-2 number, since 2×10506557858² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2626639463 + ... + 2626639466.

Almost surely, 2^10506557858 is an apocalyptic number.

10506557858 is a deficient number, since it is larger than the sum of its proper divisors (5253278932).

10506557858 is an equidigital number, since it uses as much as digits as its factorization.

10506557858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253278931.

The product of its (nonzero) digits is 1680000, while the sum is 50.

The spelling of 10506557858 in words is "ten billion, five hundred six million, five hundred fifty-seven thousand, eight hundred fifty-eight".