8535868123 has 16 divisors (see below), whose sum is σ = 9593844480. Its totient is φ = 7555119264.

The previous prime is 8535868063. The next prime is 8535868141. The reversal of 8535868123 is 3218685358.

It is a happy number.

It is not a de Polignac number, because 8535868123 - 2¹³ = 8535859931 is a prime.

It is a super-2 number, since 2×8535868123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8535868423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208336 + ... + 245917.

It is an arithmetic number, because the mean of its divisors is an integer number (599615280).

Almost surely, 2^8535868123 is an apocalyptic number.

8535868123 is a deficient number, since it is larger than the sum of its proper divisors (1057976357).

8535868123 is a wasteful number, since it uses less digits than its factorization.

8535868123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454338.

The product of its digits is 1382400, while the sum is 49.

The square root of 8535868123 is about 92389.7620031570. The cubic root of 8535868123 is about 2043.6941364799.

The spelling of 8535868123 in words is "eight billion, five hundred thirty-five million, eight hundred sixty-eight thousand, one hundred twenty-three".