11231136550 has 48 divisors (see below), whose sum is σ = 22191325200. Its totient is φ = 4216924800.

The previous prime is 11231136541. The next prime is 11231136593. The reversal of 11231136550 is 5563113211.

It is a super-2 number, since 2×11231136550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49320 + ... + 157780.

It is an arithmetic number, because the mean of its divisors is an integer number (462319275).

Almost surely, 2^11231136550 is an apocalyptic number.

11231136550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11231136550 is a deficient number, since it is larger than the sum of its proper divisors (10960188650).

11231136550 is a wasteful number, since it uses less digits than its factorization.

11231136550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108601 (or 108596 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 11231136550 its reverse (5563113211), we get a palindrome (16794249761).

The spelling of 11231136550 in words is "eleven billion, two hundred thirty-one million, one hundred thirty-six thousand, five hundred fifty".