10689531018 has 16 divisors (see below), whose sum is σ = 21416641920. Its totient is φ = 3556913696.

The previous prime is 10689530989. The next prime is 10689531053. The reversal of 10689531018 is 81013598601.

It is a super-2 number, since 2×10689531018² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1562130 + ... + 1568957.

It is an arithmetic number, because the mean of its divisors is an integer number (1338540120).

Almost surely, 2^10689531018 is an apocalyptic number.

10689531018 is an abundant number, since it is smaller than the sum of its proper divisors (10727110902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10689531018 is a wasteful number, since it uses less digits than its factorization.

10689531018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131661.

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 10689531018 in words is "ten billion, six hundred eighty-nine million, five hundred thirty-one thousand, eighteen".