397261133573 has 2 divisors, whose sum is σ = 397261133574. Its totient is φ = 397261133572.

The previous prime is 397261133569. The next prime is 397261133629. The reversal of 397261133573 is 375331162793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380469379684 + 16791753889 = 616822^2 + 129583^2 .

It is a cyclic number.

It is not a de Polignac number, because 397261133573 - 2² = 397261133569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397261133873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198630566786 + 198630566787.

It is an arithmetic number, because the mean of its divisors is an integer number (198630566787).

Almost surely, 2^397261133573 is an apocalyptic number.

It is an amenable number.

397261133573 is a deficient number, since it is larger than the sum of its proper divisors (1).

397261133573 is an equidigital number, since it uses as much as digits as its factorization.

397261133573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 50.

The spelling of 397261133573 in words is "three hundred ninety-seven billion, two hundred sixty-one million, one hundred thirty-three thousand, five hundred seventy-three".