10689131408 has 10 divisors (see below), whose sum is σ = 20710192134. Its totient is φ = 5344565696.

The previous prime is 10689131399. The next prime is 10689131423. The reversal of 10689131408 is 80413198601.

It can be written as a sum of positive squares in only one way, i.e., 7321882624 + 3367248784 = 85568^2 + 58028^2 .

It is a super-2 number, since 2×10689131408² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334035341 + ... + 334035372.

Almost surely, 2^10689131408 is an apocalyptic number.

It is an amenable number.

10689131408 is a deficient number, since it is larger than the sum of its proper divisors (10021060726).

10689131408 is an equidigital number, since it uses as much as digits as its factorization.

10689131408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668070721 (or 668070715 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 10689131408 in words is "ten billion, six hundred eighty-nine million, one hundred thirty-one thousand, four hundred eight".