11158197908 has 144 divisors (see below), whose sum is σ = 24214837248. Its totient is φ = 4433644800.

The previous prime is 11158197899. The next prime is 11158197977. The reversal of 11158197908 is 80979185111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29133485 + ... + 29133867.

It is an arithmetic number, because the mean of its divisors is an integer number (168158592).

Almost surely, 2^11158197908 is an apocalyptic number.

It is an amenable number.

11158197908 is an abundant number, since it is smaller than the sum of its proper divisors (13056639340).

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

11158197908 is a wasteful number, since it uses less digits than its factorization.

11158197908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 50.

The spelling of 11158197908 in words is "eleven billion, one hundred fifty-eight million, one hundred ninety-seven thousand, nine hundred eight".