10821692808 has 48 divisors (see below), whose sum is σ = 30100887180. Its totient is φ = 3509737344.

The previous prime is 10821692723. The next prime is 10821692891. The reversal of 10821692808 is 80829612801.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10363647204 + 458045604 = 101802^2 + 21402^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2028435 + ... + 2033762.

Almost surely, 2^10821692808 is an apocalyptic number.

10821692808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10821692808 is an abundant number, since it is smaller than the sum of its proper divisors (19279194372).

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

10821692808 is a wasteful number, since it uses less digits than its factorization.

10821692808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062246 (or 4062239 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 10821692808 in words is "ten billion, eight hundred twenty-one million, six hundred ninety-two thousand, eight hundred eight".