1296889061811 has 8 divisors (see below), whose sum is σ = 1976211903744. Its totient is φ = 741079463880.

The previous prime is 1296889061789. The next prime is 1296889061821. The reversal of 1296889061811 is 1181609886921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1296889061811 - 2¹³ = 1296889053619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1296889061821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30878310975 + ... + 30878311016.

It is an arithmetic number, because the mean of its divisors is an integer number (247026487968).

Almost surely, 2^{1296889061811} is an apocalyptic number.

1296889061811 is a deficient number, since it is larger than the sum of its proper divisors (679322841933).

1296889061811 is an equidigital number, since it uses as much as digits as its factorization.

1296889061811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61756622001.

The product of its (nonzero) digits is 2985984, while the sum is 60.

The spelling of 1296889061811 in words is "one trillion, two hundred ninety-six billion, eight hundred eighty-nine million, sixty-one thousand, eight hundred eleven".