263134402352540 has 48 divisors (see below), whose sum is σ = 555278308300800. Its totient is φ = 104741449234752.

The previous prime is 263134402352537. The next prime is 263134402352573. The reversal of 263134402352540 is 45253204431362.

It is a junction number, because it is equal to n+sod(n) for n = 263134402352491 and 263134402352500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34815734 + ... + 41694173.

It is an arithmetic number, because the mean of its divisors is an integer number (11568298089600).

Almost surely, 2^{263134402352540} is an apocalyptic number.

263134402352540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263134402352540 is an abundant number, since it is smaller than the sum of its proper divisors (292143905948260).

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

263134402352540 is a wasteful number, since it uses less digits than its factorization.

263134402352540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76510754 (or 76510752 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 44.

The spelling of 263134402352540 in words is "two hundred sixty-three trillion, one hundred thirty-four billion, four hundred two million, three hundred fifty-two thousand, five hundred forty".