263901515011 has 2 divisors, whose sum is σ = 263901515012. Its totient is φ = 263901515010.

The previous prime is 263901514991. The next prime is 263901515029. The reversal of 263901515011 is 110515109362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263901515011 - 2⁵ = 263901514979 is a prime.

It is not a weakly prime, because it can be changed into another prime (263901575011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131950757505 + 131950757506.

It is an arithmetic number, because the mean of its divisors is an integer number (131950757506).

Almost surely, 2^263901515011 is an apocalyptic number.

263901515011 is a deficient number, since it is larger than the sum of its proper divisors (1).

263901515011 is an equidigital number, since it uses as much as digits as its factorization.

263901515011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The spelling of 263901515011 in words is "two hundred sixty-three billion, nine hundred one million, five hundred fifteen thousand, eleven".