11011994898 has 32 divisors (see below), whose sum is σ = 22789166400. Its totient is φ = 3543199296.

The previous prime is 11011994837. The next prime is 11011994899. The reversal of 11011994898 is 89849911011.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011994898.

It is not an unprimeable number, because it can be changed into a prime (11011994899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362393 + ... + 1370451.

It is an arithmetic number, because the mean of its divisors is an integer number (712161450).

Almost surely, 2^11011994898 is an apocalyptic number.

11011994898 is an abundant number, since it is smaller than the sum of its proper divisors (11777171502).

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

11011994898 is a wasteful number, since it uses less digits than its factorization.

11011994898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15946.

The product of its (nonzero) digits is 186624, while the sum is 51.

The spelling of 11011994898 in words is "eleven billion, eleven million, nine hundred ninety-four thousand, eight hundred ninety-eight".