11113939550 has 96 divisors (see below), whose sum is σ = 25062110208. Its totient is φ = 3579563520.

The previous prime is 11113939517. The next prime is 11113939559. The reversal of 11113939550 is 5593931111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113939559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3848207 + ... + 3851093.

It is an arithmetic number, because the mean of its divisors is an integer number (261063648).

Almost surely, 2^11113939550 is an apocalyptic number.

11113939550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11113939550 is an abundant number, since it is smaller than the sum of its proper divisors (13948170658).

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

11113939550 is a wasteful number, since it uses less digits than its factorization.

11113939550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570 (or 3565 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 38.

The spelling of 11113939550 in words is "eleven billion, one hundred thirteen million, nine hundred thirty-nine thousand, five hundred fifty".