801489896675989 has 2 divisors, whose sum is σ = 801489896675990. Its totient is φ = 801489896675988.

The previous prime is 801489896675959. The next prime is 801489896676041. The reversal of 801489896675989 is 989576698984108.

801489896675989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468916937160100 + 332572959515889 = 21654490^2 + 18236583^2 .

It is a cyclic number.

It is not a de Polignac number, because 801489896675989 - 2¹³ = 801489896667797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 801489896675989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801489896675959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400744948337994 + 400744948337995.

It is an arithmetic number, because the mean of its divisors is an integer number (400744948337995).

Almost surely, 2^{801489896675989} is an apocalyptic number.

It is an amenable number.

801489896675989 is a deficient number, since it is larger than the sum of its proper divisors (1).

801489896675989 is an equidigital number, since it uses as much as digits as its factorization.

801489896675989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135444234240, while the sum is 97.

The spelling of 801489896675989 in words is "eight hundred one trillion, four hundred eighty-nine billion, eight hundred ninety-six million, six hundred seventy-five thousand, nine hundred eighty-nine".