11534552503 has 4 divisors (see below), whose sum is σ = 11534978448. Its totient is φ = 11534126560.

The previous prime is 11534552483. The next prime is 11534552507. The reversal of 11534552503 is 30525543511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11534552503 - 2¹³ = 11534544311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11534552507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169378 + ... + 227503.

It is an arithmetic number, because the mean of its divisors is an integer number (2883744612).

Almost surely, 2^11534552503 is an apocalyptic number.

11534552503 is a deficient number, since it is larger than the sum of its proper divisors (425945).

11534552503 is an equidigital number, since it uses as much as digits as its factorization.

11534552503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425944.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 11534552503 in words is "eleven billion, five hundred thirty-four million, five hundred fifty-two thousand, five hundred three".