2078921883601 has 2 divisors, whose sum is σ = 2078921883602. Its totient is φ = 2078921883600.

The previous prime is 2078921883557. The next prime is 2078921883679. The reversal of 2078921883601 is 1063881298702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1617882241600 + 461039642001 = 1271960^2 + 678999^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078921883601 - 2¹⁹ = 2078921359313 is a prime.

It is not a weakly prime, because it can be changed into another prime (2078921889601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039460941800 + 1039460941801.

It is an arithmetic number, because the mean of its divisors is an integer number (1039460941801).

Almost surely, 2^{2078921883601} is an apocalyptic number.

It is an amenable number.

2078921883601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078921883601 is an equidigital number, since it uses as much as digits as its factorization.

2078921883601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 2078921883601 in words is "two trillion, seventy-eight billion, nine hundred twenty-one million, eight hundred eighty-three thousand, six hundred one".