11528988530 has 16 divisors (see below), whose sum is σ = 21844399680. Its totient is φ = 4368879792.

The previous prime is 11528988521. The next prime is 11528988553. The reversal of 11528988530 is 3588982511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30339254 + ... + 30339633.

It is an arithmetic number, because the mean of its divisors is an integer number (1365274980).

Almost surely, 2^11528988530 is an apocalyptic number.

11528988530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11528988530 is a deficient number, since it is larger than the sum of its proper divisors (10315411150).

11528988530 is a wasteful number, since it uses less digits than its factorization.

11528988530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60678913.

The product of its (nonzero) digits is 691200, while the sum is 50.

The spelling of 11528988530 in words is "eleven billion, five hundred twenty-eight million, nine hundred eighty-eight thousand, five hundred thirty".