263011242397 has 2 divisors, whose sum is σ = 263011242398. Its totient is φ = 263011242396.

The previous prime is 263011242383. The next prime is 263011242451. The reversal of 263011242397 is 793242110362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166158955876 + 96852286521 = 407626^2 + 311211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263011242397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263011242337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131505621198 + 131505621199.

It is an arithmetic number, because the mean of its divisors is an integer number (131505621199).

Almost surely, 2^263011242397 is an apocalyptic number.

It is an amenable number.

263011242397 is a deficient number, since it is larger than the sum of its proper divisors (1).

263011242397 is an equidigital number, since it uses as much as digits as its factorization.

263011242397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 263011242397 in words is "two hundred sixty-three billion, eleven million, two hundred forty-two thousand, three hundred ninety-seven".