1296874550416 has 15 divisors (see below), whose sum is σ = 2512703267193. Its totient is φ = 648434997600.

The previous prime is 1296874550393. The next prime is 1296874550501. The reversal of 1296874550416 is 6140554786921.

The square root of 1296874550416 is 1138804.

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., 433759228816 + 863115321600 = 658604^2 + 929040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4412866 + ... + 4697566.

Almost surely, 2^{1296874550416} is an apocalyptic number.

1296874550416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1296874550416 is the 1138804-th square number.

It is an amenable number.

1296874550416 is a deficient number, since it is larger than the sum of its proper divisors (1215828716777).

1296874550416 is an frugal number, since it uses more digits than its factorization.

1296874550416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569410 (or 284703 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 1296874550416 in words is "one trillion, two hundred ninety-six billion, eight hundred seventy-four million, five hundred fifty thousand, four hundred sixteen".