10812409808 has 20 divisors (see below), whose sum is σ = 21026929860. Its totient is φ = 5386105344.

The previous prime is 10812409807. The next prime is 10812409843. The reversal of 10812409808 is 80890421801.

It can be written as a sum of positive squares in 2 ways, for example, as 4125749824 + 6686659984 = 64232^2 + 81772^2 .

It is a super-2 number, since 2×10812409808² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10812409807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251785 + ... + 1260392.

It is an arithmetic number, because the mean of its divisors is an integer number (1051346493).

Almost surely, 2^10812409808 is an apocalyptic number.

It is an amenable number.

10812409808 is a deficient number, since it is larger than the sum of its proper divisors (10214520052).

10812409808 is a wasteful number, since it uses less digits than its factorization.

10812409808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512454 (or 2512448 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 41.

The spelling of 10812409808 in words is "ten billion, eight hundred twelve million, four hundred nine thousand, eight hundred eight".