1296896831985 has 16 divisors (see below), whose sum is σ = 2075074724736. Its totient is φ = 691665045888.

The previous prime is 1296896831953. The next prime is 1296896832017. The reversal of 1296896831985 is 5891386986921.

It is an interprime number because it is at equal distance from previous prime (1296896831953) and next prime (1296896832017).

It is not a de Polignac number, because 1296896831985 - 2⁵ = 1296896831953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6372 + ... + 1610538.

It is an arithmetic number, because the mean of its divisors is an integer number (129692170296).

Almost surely, 2^{1296896831985} is an apocalyptic number.

1296896831985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1296896831985 is a deficient number, since it is larger than the sum of its proper divisors (778177892751).

1296896831985 is a wasteful number, since it uses less digits than its factorization.

1296896831985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658072.

The product of its digits is 403107840, while the sum is 75.

The spelling of 1296896831985 in words is "one trillion, two hundred ninety-six billion, eight hundred ninety-six million, eight hundred thirty-one thousand, nine hundred eighty-five".