107245886809681 has 3 divisors (see below), whose sum is σ = 107245897165641. Its totient is φ = 107245876453722.

The previous prime is 107245886809601. The next prime is 107245886809703. The reversal of 107245886809681 is 186908688542701.

The square root of 107245886809681 is 10355959.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 107245886809681 - 2³¹ = 107243739326033 is a prime.

It is a super-2 number, since 2×107245886809681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107245886809601) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5177980 + ... + 15533938.

It is an arithmetic number, because the mean of its divisors is an integer number (35748632388547).

Almost surely, 2^{107245886809681} is an apocalyptic number.

107245886809681 is the 10355959-th square number.

107245886809681 is the 5177980-th centered octagonal number.

It is an amenable number.

107245886809681 is a deficient number, since it is larger than the sum of its proper divisors (10355960).

107245886809681 is an frugal number, since it uses more digits than its factorization.

107245886809681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20711918 (or 10355959 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 73.

The spelling of 107245886809681 in words is "one hundred seven trillion, two hundred forty-five billion, eight hundred eighty-six million, eight hundred nine thousand, six hundred eighty-one".