11280620808 has 36 divisors (see below), whose sum is σ = 30554122365. Its totient is φ = 3759906528.

The previous prime is 11280620807. The next prime is 11280620821. The reversal of 11280620808 is 80802608211.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

11280620808 is a `hidden beast` number, since 1 + 1 + 28 + 0 + 620 + 8 + 0 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8353594404 + 2927026404 = 91398^2 + 54102^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=75102.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (11280620807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 894966 + ... + 907482.

Almost surely, 2^11280620808 is an apocalyptic number.

11280620808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11280620808 is an abundant number, since it is smaller than the sum of its proper divisors (19273501557).

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

11280620808 is an frugal number, since it uses more digits than its factorization.

11280620808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25046 (or 12522 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The spelling of 11280620808 in words is "eleven billion, two hundred eighty million, six hundred twenty thousand, eight hundred eight".