263105053967 has 4 divisors (see below), whose sum is σ = 300691490256. Its totient is φ = 225518617680.

The previous prime is 263105053921. The next prime is 263105053973. The reversal of 263105053967 is 769350501362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 263105053967 - 2¹⁶ = 263104988431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263105053987) 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, 18793218134 + ... + 18793218147.

It is an arithmetic number, because the mean of its divisors is an integer number (75172872564).

Almost surely, 2^263105053967 is an apocalyptic number.

263105053967 is a deficient number, since it is larger than the sum of its proper divisors (37586436289).

263105053967 is an equidigital number, since it uses as much as digits as its factorization.

263105053967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37586436288.

The product of its (nonzero) digits is 1020600, while the sum is 47.

The spelling of 263105053967 in words is "two hundred sixty-three billion, one hundred five million, fifty-three thousand, nine hundred sixty-seven".