1298379680889 has 32 divisors (see below), whose sum is σ = 1765873115136. Its totient is φ = 848394435840.

The previous prime is 1298379680849. The next prime is 1298379680893. The reversal of 1298379680889 is 9880869738921.

It is not a de Polignac number, because 1298379680889 - 2²⁸ = 1298111245433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1298379680809) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 24881944 + ... + 24934070.

It is an arithmetic number, because the mean of its divisors is an integer number (55183534848).

Almost surely, 2^{1298379680889} is an apocalyptic number.

It is an amenable number.

1298379680889 is a deficient number, since it is larger than the sum of its proper divisors (467493434247).

1298379680889 is a wasteful number, since it uses less digits than its factorization.

1298379680889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52885.

The product of its (nonzero) digits is 752467968, while the sum is 78.

The spelling of 1298379680889 in words is "one trillion, two hundred ninety-eight billion, three hundred seventy-nine million, six hundred eighty thousand, eight hundred eighty-nine".