263260918087 has 8 divisors (see below), whose sum is σ = 264275472960. Its totient is φ = 262246629600.

The previous prime is 263260918057. The next prime is 263260918121. The reversal of 263260918087 is 780819062362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263260918087 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 (263260918057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041837 + ... + 2166937.

It is an arithmetic number, because the mean of its divisors is an integer number (33034434120).

Almost surely, 2^263260918087 is an apocalyptic number.

263260918087 is a deficient number, since it is larger than the sum of its proper divisors (1014554873).

263260918087 is a wasteful number, since it uses less digits than its factorization.

263260918087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133193.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 263260918087 in words is "two hundred sixty-three billion, two hundred sixty million, nine hundred eighteen thousand, eighty-seven".