1398073766977 has 2 divisors, whose sum is σ = 1398073766978. Its totient is φ = 1398073766976.

The previous prime is 1398073766953. The next prime is 1398073766983. The reversal of 1398073766977 is 7796673708931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1317802977936 + 80270789041 = 1147956^2 + 283321^2 .

It is a cyclic number.

It is not a de Polignac number, because 1398073766977 - 2¹¹ = 1398073764929 is a prime.

It is a super-2 number, since 2×1398073766977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1398073766917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699036883488 + 699036883489.

It is an arithmetic number, because the mean of its divisors is an integer number (699036883489).

Almost surely, 2^{1398073766977} is an apocalyptic number.

It is an amenable number.

1398073766977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398073766977 is an equidigital number, since it uses as much as digits as its factorization.

1398073766977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504094752, while the sum is 73.

The spelling of 1398073766977 in words is "one trillion, three hundred ninety-eight billion, seventy-three million, seven hundred sixty-six thousand, nine hundred seventy-seven".