263877487487 has 2 divisors, whose sum is σ = 263877487488. Its totient is φ = 263877487486.

The previous prime is 263877487457. The next prime is 263877487513. The reversal of 263877487487 is 784784778362.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263877487487 - 2¹² = 263877483391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263877487487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263877487457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131938743743 + 131938743744.

It is an arithmetic number, because the mean of its divisors is an integer number (131938743744).

Almost surely, 2^263877487487 is an apocalyptic number.

263877487487 is a deficient number, since it is larger than the sum of its proper divisors (1).

263877487487 is an equidigital number, since it uses as much as digits as its factorization.

263877487487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 708083712, while the sum is 71.

The spelling of 263877487487 in words is "two hundred sixty-three billion, eight hundred seventy-seven million, four hundred eighty-seven thousand, four hundred eighty-seven".