12516433700 has 72 divisors (see below), whose sum is σ = 27985208832. Its totient is φ = 4856481280.

The previous prime is 12516433697. The next prime is 12516433751. The reversal of 12516433700 is 733461521.

It is a super-2 number, since 2×12516433700² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519317 + ... + 542883.

It is an arithmetic number, because the mean of its divisors is an integer number (388683456).

Almost surely, 2^12516433700 is an apocalyptic number.

12516433700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12516433700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13992604416).

12516433700 is an abundant number, since it is smaller than the sum of its proper divisors (15468775132).

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

12516433700 is a wasteful number, since it uses less digits than its factorization.

12516433700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23741 (or 23734 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 12516433700 in words is "twelve billion, five hundred sixteen million, four hundred thirty-three thousand, seven hundred".