263253675397 has 2 divisors, whose sum is σ = 263253675398. Its totient is φ = 263253675396.

The previous prime is 263253675329. The next prime is 263253675431. The reversal of 263253675397 is 793576352362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262276112641 + 977562756 = 512129^2 + 31266^2 .

It is a cyclic number.

It is not a de Polignac number, because 263253675397 - 2²³ = 263245286789 is a prime.

It is a super-2 number, since 2×263253675397² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263253675317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131626837698 + 131626837699.

It is an arithmetic number, because the mean of its divisors is an integer number (131626837699).

Almost surely, 2^263253675397 is an apocalyptic number.

It is an amenable number.

263253675397 is a deficient number, since it is larger than the sum of its proper divisors (1).

263253675397 is an equidigital number, since it uses as much as digits as its factorization.

263253675397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42865200, while the sum is 58.

The spelling of 263253675397 in words is "two hundred sixty-three billion, two hundred fifty-three million, six hundred seventy-five thousand, three hundred ninety-seven".