11503321054 has 8 divisors (see below), whose sum is σ = 17358305328. Its totient is φ = 5717219280.

The previous prime is 11503321019. The next prime is 11503321103. The reversal of 11503321054 is 45012330511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17220207 + ... + 17220874.

It is an arithmetic number, because the mean of its divisors is an integer number (2169788166).

Almost surely, 2^11503321054 is an apocalyptic number.

11503321054 is a deficient number, since it is larger than the sum of its proper divisors (5854984274).

11503321054 is a wasteful number, since it uses less digits than its factorization.

11503321054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34441250.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 11503321054 its reverse (45012330511), we get a palindrome (56515651565).

The spelling of 11503321054 in words is "eleven billion, five hundred three million, three hundred twenty-one thousand, fifty-four".