263341152353257 has 4 divisors (see below), whose sum is σ = 287281257112656. Its totient is φ = 239401047593860.

The previous prime is 263341152353207. The next prime is 263341152353303. The reversal of 263341152353257 is 752353251143362.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 263341152353257 - 2³¹ = 263339004869609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263341152353207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11970052379683 + ... + 11970052379704.

It is an arithmetic number, because the mean of its divisors is an integer number (71820314278164).

Almost surely, 2^{263341152353257} is an apocalyptic number.

It is an amenable number.

263341152353257 is a deficient number, since it is larger than the sum of its proper divisors (23940104759399).

263341152353257 is a wasteful number, since it uses less digits than its factorization.

263341152353257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23940104759398.

The product of its digits is 13608000, while the sum is 52.

The spelling of 263341152353257 in words is "two hundred sixty-three trillion, three hundred forty-one billion, one hundred fifty-two million, three hundred fifty-three thousand, two hundred fifty-seven".