263513725242 has 16 divisors (see below), whose sum is σ = 527242856832. Its totient is φ = 87802007360.

The previous prime is 263513725217. The next prime is 263513725253. The reversal of 263513725242 is 242527315362.

It is a junction number, because it is equal to n+sod(n) for n = 263513725194 and 263513725203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8959359 + ... + 8988722.

It is an arithmetic number, because the mean of its divisors is an integer number (32952678552).

Almost surely, 2^263513725242 is an apocalyptic number.

263513725242 is an abundant number, since it is smaller than the sum of its proper divisors (263729131590).

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

263513725242 is a wasteful number, since it uses less digits than its factorization.

263513725242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17950533.

The product of its digits is 604800, while the sum is 42.

The spelling of 263513725242 in words is "two hundred sixty-three billion, five hundred thirteen million, seven hundred twenty-five thousand, two hundred forty-two".