263071320340 has 96 divisors (see below), whose sum is σ = 562679986176. Its totient is φ = 103298509440.

The previous prime is 263071320307. The next prime is 263071320349. The reversal of 263071320340 is 43023170362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263071320349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324378535 + ... + 324379345.

It is an arithmetic number, because the mean of its divisors is an integer number (5861249856).

Almost surely, 2^263071320340 is an apocalyptic number.

263071320340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263071320340 is an abundant number, since it is smaller than the sum of its proper divisors (299608665836).

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

263071320340 is a wasteful number, since it uses less digits than its factorization.

263071320340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 31.

The spelling of 263071320340 in words is "two hundred sixty-three billion, seventy-one million, three hundred twenty thousand, three hundred forty".