1676122398721 has 2 divisors, whose sum is σ = 1676122398722. Its totient is φ = 1676122398720.

The previous prime is 1676122398683. The next prime is 1676122398733. The reversal of 1676122398721 is 1278932216761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1647023156496 + 29099242225 = 1283364^2 + 170585^2 .

It is an emirp because it is prime and its reverse (1278932216761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1676122398721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1676122398521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838061199360 + 838061199361.

It is an arithmetic number, because the mean of its divisors is an integer number (838061199361).

Almost surely, 2^{1676122398721} is an apocalyptic number.

It is an amenable number.

1676122398721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1676122398721 is an equidigital number, since it uses as much as digits as its factorization.

1676122398721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The spelling of 1676122398721 in words is "one trillion, six hundred seventy-six billion, one hundred twenty-two million, three hundred ninety-eight thousand, seven hundred twenty-one".