12400485528 has 96 divisors (see below), whose sum is σ = 31726356480. Its totient is φ = 4038883200.

The previous prime is 12400485497. The next prime is 12400485551. The reversal of 12400485528 is 82558400421.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17056701 + ... + 17057427.

It is an arithmetic number, because the mean of its divisors is an integer number (330482880).

Almost surely, 2^12400485528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12400485528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15863178240).

12400485528 is an abundant number, since it is smaller than the sum of its proper divisors (19325870952).

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

12400485528 is a wasteful number, since it uses less digits than its factorization.

12400485528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

Adding to 12400485528 its reverse (82558400421), we get a palindrome (94958885949).

The spelling of 12400485528 in words is "twelve billion, four hundred million, four hundred eighty-five thousand, five hundred twenty-eight".