10111005550 has 24 divisors (see below), whose sum is σ = 18811521432. Its totient is φ = 4043316000.

The previous prime is 10111005547. The next prime is 10111005557. The reversal of 10111005550 is 5550011101.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111005557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175905 + ... + 226195.

It is an arithmetic number, because the mean of its divisors is an integer number (783813393).

Almost surely, 2^10111005550 is an apocalyptic number.

10111005550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10111005550 is a deficient number, since it is larger than the sum of its proper divisors (8700515882).

10111005550 is a wasteful number, since it uses less digits than its factorization.

10111005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54324 (or 54319 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 19.

Adding to 10111005550 its reverse (5550011101), we get a palindrome (15661016651).

The spelling of 10111005550 in words is "ten billion, one hundred eleven million, five thousand, five hundred fifty".