1601217643153 has 2 divisors, whose sum is σ = 1601217643154. Its totient is φ = 1601217643152.

The previous prime is 1601217643117. The next prime is 1601217643163. The reversal of 1601217643153 is 3513467121061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1459730325249 + 141487317904 = 1208193^2 + 376148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1601217643153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1601217643163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800608821576 + 800608821577.

It is an arithmetic number, because the mean of its divisors is an integer number (800608821577).

Almost surely, 2^{1601217643153} is an apocalyptic number.

It is an amenable number.

1601217643153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601217643153 is an equidigital number, since it uses as much as digits as its factorization.

1601217643153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 1601217643153 in words is "one trillion, six hundred one billion, two hundred seventeen million, six hundred forty-three thousand, one hundred fifty-three".