2789991321601 has 24 divisors (see below), whose sum is σ = 3125892060864. Its totient is φ = 2469549972960.

The previous prime is 2789991321587. The next prime is 2789991321619. The reversal of 2789991321601 is 1061231999872.

It is not a de Polignac number, because 2789991321601 - 2³¹ = 2787843837953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2789991321641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6231100 + ... + 6663826.

It is an arithmetic number, because the mean of its divisors is an integer number (130245502536).

Almost surely, 2^{2789991321601} is an apocalyptic number.

It is an amenable number.

2789991321601 is a deficient number, since it is larger than the sum of its proper divisors (335900739263).

2789991321601 is a wasteful number, since it uses less digits than its factorization.

2789991321601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433141 (or 433098 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 2789991321601 in words is "two trillion, seven hundred eighty-nine billion, nine hundred ninety-one million, three hundred twenty-one thousand, six hundred one".