11815289948 has 24 divisors (see below), whose sum is σ = 25778815104. Its totient is φ = 4603359600.

The previous prime is 11815289921. The next prime is 11815289999. The reversal of 11815289948 is 84998251811.

It is a junction number, because it is equal to n+sod(n) for n = 11815289893 and 11815289902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19180358 + ... + 19180973.

It is an arithmetic number, because the mean of its divisors is an integer number (1074117296).

Almost surely, 2^11815289948 is an apocalyptic number.

It is an amenable number.

11815289948 is an abundant number, since it is smaller than the sum of its proper divisors (13963525156).

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

11815289948 is a wasteful number, since it uses less digits than its factorization.

11815289948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38361353 (or 38361351 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 56.

The spelling of 11815289948 in words is "eleven billion, eight hundred fifteen million, two hundred eighty-nine thousand, nine hundred forty-eight".