12500017616 has 40 divisors (see below), whose sum is σ = 25506998400. Its totient is φ = 5917916160.

The previous prime is 12500017603. The next prime is 12500017619. The reversal of 12500017616 is 61671000521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500017619) 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, 622745 + ... + 642503.

It is an arithmetic number, because the mean of its divisors is an integer number (637674960).

Almost surely, 2^12500017616 is an apocalyptic number.

12500017616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12500017616 is an abundant number, since it is smaller than the sum of its proper divisors (13006980784).

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

12500017616 is a wasteful number, since it uses less digits than its factorization.

12500017616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21867 (or 21861 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The spelling of 12500017616 in words is "twelve billion, five hundred million, seventeen thousand, six hundred sixteen".