263256615354016 has 24 divisors (see below), whose sum is σ = 527070977778240. Its totient is φ = 129397319410368.

The previous prime is 263256615353993. The next prime is 263256615354041. The reversal of 263256615354016 is 610453516652362.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69718381416 + ... + 69718385191.

It is an arithmetic number, because the mean of its divisors is an integer number (21961290740760).

Almost surely, 2^{263256615354016} is an apocalyptic number.

It is an amenable number.

263256615354016 is an abundant number, since it is smaller than the sum of its proper divisors (263814362424224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263256615354016 is a wasteful number, since it uses less digits than its factorization.

263256615354016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139436766676 (or 139436766668 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 55.

The spelling of 263256615354016 in words is "two hundred sixty-three trillion, two hundred fifty-six billion, six hundred fifteen million, three hundred fifty-four thousand, sixteen".