913781303781 has 16 divisors (see below), whose sum is σ = 1257860203008. Its totient is φ = 589450680000.

The previous prime is 913781303777. The next prime is 913781303797. The reversal of 913781303781 is 187303187319.

It is not a de Polignac number, because 913781303781 - 2² = 913781303777 is a prime.

It is a super-2 number, since 2×913781303781² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913781303731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66970 + ... + 1353531.

It is an arithmetic number, because the mean of its divisors is an integer number (78616262688).

Almost surely, 2^913781303781 is an apocalyptic number.

It is an amenable number.

913781303781 is a deficient number, since it is larger than the sum of its proper divisors (344078899227).

913781303781 is a wasteful number, since it uses less digits than its factorization.

913781303781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427452.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 913781303781 in words is "nine hundred thirteen billion, seven hundred eighty-one million, three hundred three thousand, seven hundred eighty-one".