11985527830 has 32 divisors (see below), whose sum is σ = 22291718400. Its totient is φ = 4635010560.

The previous prime is 11985527753. The next prime is 11985527837. The reversal of 11985527830 is 3872558911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11985527837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306762 + ... + 343618.

It is an arithmetic number, because the mean of its divisors is an integer number (696616200).

Almost surely, 2^11985527830 is an apocalyptic number.

11985527830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11985527830 is a deficient number, since it is larger than the sum of its proper divisors (10306190570).

11985527830 is a wasteful number, since it uses less digits than its factorization.

11985527830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37944.

The product of its (nonzero) digits is 604800, while the sum is 49.

The spelling of 11985527830 in words is "eleven billion, nine hundred eighty-five million, five hundred twenty-seven thousand, eight hundred thirty".