12276517520 has 40 divisors (see below), whose sum is σ = 28549436856. Its totient is φ = 4909483008.

The previous prime is 12276517499. The next prime is 12276517543. The reversal of 12276517520 is 2571567221.

It can be written as a sum of positive squares in 4 ways, for example, as 1951518976 + 10324998544 = 44176^2 + 101612^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394034 + ... + 424046.

Almost surely, 2^12276517520 is an apocalyptic number.

12276517520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12276517520 is an abundant number, since it is smaller than the sum of its proper divisors (16272919336).

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

12276517520 is a wasteful number, since it uses less digits than its factorization.

12276517520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35139 (or 35133 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 12276517520 in words is "twelve billion, two hundred seventy-six million, five hundred seventeen thousand, five hundred twenty".