263781353742 has 16 divisors (see below), whose sum is σ = 527572558800. Its totient is φ = 87925476032.

The previous prime is 263781353729. The next prime is 263781353747. The reversal of 263781353742 is 247353187362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263781353747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36117 + ... + 727232.

It is an arithmetic number, because the mean of its divisors is an integer number (32973284925).

Almost surely, 2^263781353742 is an apocalyptic number.

263781353742 is an abundant number, since it is smaller than the sum of its proper divisors (263791205058).

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

263781353742 is a wasteful number, since it uses less digits than its factorization.

263781353742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820947.

The product of its digits is 5080320, while the sum is 51.

The spelling of 263781353742 in words is "two hundred sixty-three billion, seven hundred eighty-one million, three hundred fifty-three thousand, seven hundred forty-two".