100708884781 has 4 divisors (see below), whose sum is σ = 100728268252. Its totient is φ = 100689501312.

The previous prime is 100708884779. The next prime is 100708884811. The reversal of 100708884781 is 187488807001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17457015625 + 83251869156 = 132125^2 + 288534^2 .

It is a cyclic number.

It is not a de Polignac number, because 100708884781 - 2¹ = 100708884779 is a prime.

It is a super-2 number, since 2×100708884781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100708884181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9683940 + ... + 9694333.

It is an arithmetic number, because the mean of its divisors is an integer number (25182067063).

Almost surely, 2^100708884781 is an apocalyptic number.

It is an amenable number.

100708884781 is a deficient number, since it is larger than the sum of its proper divisors (19383471).

100708884781 is an equidigital number, since it uses as much as digits as its factorization.

100708884781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19383470.

The product of its (nonzero) digits is 802816, while the sum is 52.

The spelling of 100708884781 in words is "one hundred billion, seven hundred eight million, eight hundred eighty-four thousand, seven hundred eighty-one".