12909525384 has 64 divisors (see below), whose sum is σ = 36921398400. Its totient is φ = 3684731904.

The previous prime is 12909525379. The next prime is 12909525401. The reversal of 12909525384 is 48352590921.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131434 + ... + 207590.

It is an arithmetic number, because the mean of its divisors is an integer number (576896850).

Almost surely, 2^12909525384 is an apocalyptic number.

12909525384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12909525384 is an abundant number, since it is smaller than the sum of its proper divisors (24011873016).

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

12909525384 is a wasteful number, since it uses less digits than its factorization.

12909525384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77182 (or 77178 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 12909525384 in words is "twelve billion, nine hundred nine million, five hundred twenty-five thousand, three hundred eighty-four".