1600028329021 has 2 divisors, whose sum is σ = 1600028329022. Its totient is φ = 1600028329020.

The previous prime is 1600028329019. The next prime is 1600028329051. The reversal of 1600028329021 is 1209238200061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1197547205625 + 402481123396 = 1094325^2 + 634414^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600028329021 - 2¹ = 1600028329019 is a prime.

Together with 1600028329019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1600028329051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800014164510 + 800014164511.

It is an arithmetic number, because the mean of its divisors is an integer number (800014164511).

Almost surely, 2^{1600028329021} is an apocalyptic number.

It is an amenable number.

1600028329021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600028329021 is an equidigital number, since it uses as much as digits as its factorization.

1600028329021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 1600028329021 in words is "one trillion, six hundred billion, twenty-eight million, three hundred twenty-nine thousand, twenty-one".