1973305316677 has 2 divisors, whose sum is σ = 1973305316678. Its totient is φ = 1973305316676.

The previous prime is 1973305316623. The next prime is 1973305316743. The reversal of 1973305316677 is 7766135033791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972075341636 + 1229975041 = 1404306^2 + 35071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973305316677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973305319677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986652658338 + 986652658339.

It is an arithmetic number, because the mean of its divisors is an integer number (986652658339).

Almost surely, 2^{1973305316677} is an apocalyptic number.

It is an amenable number.

1973305316677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973305316677 is an equidigital number, since it uses as much as digits as its factorization.

1973305316677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15002820, while the sum is 58.

The spelling of 1973305316677 in words is "one trillion, nine hundred seventy-three billion, three hundred five million, three hundred sixteen thousand, six hundred seventy-seven".