11557873808 has 20 divisors (see below), whose sum is σ = 24115948668. Its totient is φ = 5334403200.

The previous prime is 11557873807. The next prime is 11557873837. The reversal of 11557873808 is 80837875511.

It can be written as a sum of positive squares in 2 ways, for example, as 930738064 + 10627135744 = 30508^2 + 103088^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11557873808.

It is not an unprimeable number, because it can be changed into a prime (11557873807) 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, 27783143 + ... + 27783558.

Almost surely, 2^11557873808 is an apocalyptic number.

It is an amenable number.

11557873808 is an abundant number, since it is smaller than the sum of its proper divisors (12558074860).

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

11557873808 is a wasteful number, since it uses less digits than its factorization.

11557873808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55566722 (or 55566716 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 53.

The spelling of 11557873808 in words is "eleven billion, five hundred fifty-seven million, eight hundred seventy-three thousand, eight hundred eight".