11505500530 has 16 divisors (see below), whose sum is σ = 20728903104. Its totient is φ = 4597977520.

The previous prime is 11505500527. The next prime is 11505500537. The reversal of 11505500530 is 3500550511.

It is a junction number, because it is equal to n+sod(n) for n = 11505500495 and 11505500504.

It is not an unprimeable number, because it can be changed into a prime (11505500537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516382 + ... + 538201.

It is an arithmetic number, because the mean of its divisors is an integer number (1295556444).

Almost surely, 2^11505500530 is an apocalyptic number.

11505500530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11505500530 is a deficient number, since it is larger than the sum of its proper divisors (9223402574).

11505500530 is a wasteful number, since it uses less digits than its factorization.

11505500530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055681.

The product of its (nonzero) digits is 1875, while the sum is 25.

The spelling of 11505500530 in words is "eleven billion, five hundred five million, five hundred thousand, five hundred thirty".