12924051856 has 45 divisors (see below), whose sum is σ = 25387806531. Its totient is φ = 6373579776.

The previous prime is 12924051851. The next prime is 12924051871. The reversal of 12924051856 is 65815042921.

The square root of 12924051856 is 113684.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2971994256 + 9952057600 = 54516^2 + 99760^2 .

It is a super-2 number, since 2×12924051856² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12924051851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44109246 + ... + 44109538.

Almost surely, 2^12924051856 is an apocalyptic number.

12924051856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12924051856 is the 113684-th square number.

It is an amenable number.

12924051856 is a deficient number, since it is larger than the sum of its proper divisors (12463754675).

12924051856 is an frugal number, since it uses more digits than its factorization.

12924051856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 12924051856 in words is "twelve billion, nine hundred twenty-four million, fifty-one thousand, eight hundred fifty-six".