11117797428 has 48 divisors (see below), whose sum is σ = 27486212544. Its totient is φ = 3485560320.

The previous prime is 11117797421. The next prime is 11117797429. The reversal of 11117797428 is 82479771111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11117797421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294526 + ... + 330122.

It is an arithmetic number, because the mean of its divisors is an integer number (572629428).

Almost surely, 2^11117797428 is an apocalyptic number.

It is an amenable number.

11117797428 is an abundant number, since it is smaller than the sum of its proper divisors (16368415116).

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

11117797428 is a wasteful number, since it uses less digits than its factorization.

11117797428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37152 (or 37150 counting only the distinct ones).

The product of its digits is 197568, while the sum is 48.

The spelling of 11117797428 in words is "eleven billion, one hundred seventeen million, seven hundred ninety-seven thousand, four hundred twenty-eight".