263938064527 has 2 divisors, whose sum is σ = 263938064528. Its totient is φ = 263938064526.

The previous prime is 263938064519. The next prime is 263938064557. The reversal of 263938064527 is 725460839362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263938064527 - 2³ = 263938064519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263938064557) 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, 131969032263 + 131969032264.

It is an arithmetic number, because the mean of its divisors is an integer number (131969032264).

Almost surely, 2^263938064527 is an apocalyptic number.

263938064527 is a deficient number, since it is larger than the sum of its proper divisors (1).

263938064527 is an equidigital number, since it uses as much as digits as its factorization.

263938064527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 263938064527 in words is "two hundred sixty-three billion, nine hundred thirty-eight million, sixty-four thousand, five hundred twenty-seven".