263531052080 has 80 divisors (see below), whose sum is σ = 634471605504. Its totient is φ = 101689912320.

The previous prime is 263531052077. The next prime is 263531052091. The reversal of 263531052080 is 80250135362.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 263531052080.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618554 + ... + 953766.

Almost surely, 2^263531052080 is an apocalyptic number.

263531052080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263531052080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317235802752).

263531052080 is an abundant number, since it is smaller than the sum of its proper divisors (370940553424).

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

263531052080 is a wasteful number, since it uses less digits than its factorization.

263531052080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335574 (or 335568 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 263531052080 in words is "two hundred sixty-three billion, five hundred thirty-one million, fifty-two thousand, eighty".