11503344534 has 32 divisors (see below), whose sum is σ = 26419167360. Its totient is φ = 3302395200.

The previous prime is 11503344487. The next prime is 11503344581. The reversal of 11503344534 is 43544330511.

It is an interprime number because it is at equal distance from previous prime (11503344487) and next prime (11503344581).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 11503344495 and 11503344504.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4585407 + ... + 4587914.

It is an arithmetic number, because the mean of its divisors is an integer number (825598980).

Almost surely, 2^11503344534 is an apocalyptic number.

11503344534 is an abundant number, since it is smaller than the sum of its proper divisors (14915822826).

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

11503344534 is a wasteful number, since it uses less digits than its factorization.

11503344534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9173356.

The product of its (nonzero) digits is 43200, while the sum is 33.

The spelling of 11503344534 in words is "eleven billion, five hundred three million, three hundred forty-four thousand, five hundred thirty-four".