1043997996397 has 2 divisors, whose sum is σ = 1043997996398. Its totient is φ = 1043997996396.

The previous prime is 1043997996367. The next prime is 1043997996403. The reversal of 1043997996397 is 7936997993401.

1043997996397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1043705381161 + 292615236 = 1021619^2 + 17106^2 .

It is an emirp because it is prime and its reverse (7936997993401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1043997996397 - 2³¹ = 1041850512749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043997996337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521998998198 + 521998998199.

It is an arithmetic number, because the mean of its divisors is an integer number (521998998199).

Almost surely, 2^{1043997996397} is an apocalyptic number.

It is an amenable number.

1043997996397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043997996397 is an equidigital number, since it uses as much as digits as its factorization.

1043997996397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 624974616, while the sum is 76.

The spelling of 1043997996397 in words is "one trillion, forty-three billion, nine hundred ninety-seven million, nine hundred ninety-six thousand, three hundred ninety-seven".