1512447393856 has 63 divisors (see below), whose sum is σ = 3491423869437. Its totient is φ = 648162224640.

The previous prime is 1512447393839. The next prime is 1512447393857. The reversal of 1512447393856 is 6583937442151.

The square root of 1512447393856 is 1229816.

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

It can be written as a sum of positive squares in only one way, i.e., 1193809723456 + 318637670400 = 1092616^2 + 564480^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1512447393856.

It is not an unprimeable number, because it can be changed into a prime (1512447393857) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 68858716 + ... + 68880676.

It is an arithmetic number, because the mean of its divisors is an integer number (55419426499).

Almost surely, 2^{1512447393856} is an apocalyptic number.

1512447393856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1512447393856 is the 1229816-th square number.

It is an amenable number.

1512447393856 is an abundant number, since it is smaller than the sum of its proper divisors (1978976475581).

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

1512447393856 is an frugal number, since it uses more digits than its factorization.

1512447393856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43948 (or 21970 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 58.

The spelling of 1512447393856 in words is "one trillion, five hundred twelve billion, four hundred forty-seven million, three hundred ninety-three thousand, eight hundred fifty-six".