1799547321601 has 2 divisors, whose sum is σ = 1799547321602. Its totient is φ = 1799547321600.

The previous prime is 1799547321587. The next prime is 1799547321641. The reversal of 1799547321601 is 1061237459971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1789237965376 + 10309356225 = 1337624^2 + 101535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1799547321601 - 2²³ = 1799538932993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1799547321641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899773660800 + 899773660801.

It is an arithmetic number, because the mean of its divisors is an integer number (899773660801).

Almost surely, 2^{1799547321601} is an apocalyptic number.

It is an amenable number.

1799547321601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799547321601 is an equidigital number, since it uses as much as digits as its factorization.

1799547321601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 1799547321601 in words is "one trillion, seven hundred ninety-nine billion, five hundred forty-seven million, three hundred twenty-one thousand, six hundred one".