100681428689 has 4 divisors (see below), whose sum is σ = 100753396800. Its totient is φ = 100609460580.

The previous prime is 100681428671. The next prime is 100681428703. The reversal of 100681428689 is 986824186001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986824186001 = 124679 ⋅7914919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100681428689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100681428689.

It is not an unprimeable number, because it can be changed into a prime (100681428389) 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 3 ways as a sum of consecutive naturals, for example, 35981957 + ... + 35984754.

It is an arithmetic number, because the mean of its divisors is an integer number (25188349200).

Almost surely, 2^100681428689 is an apocalyptic number.

It is an amenable number.

100681428689 is a deficient number, since it is larger than the sum of its proper divisors (71968111).

100681428689 is an equidigital number, since it uses as much as digits as its factorization.

100681428689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71968110.

The product of its (nonzero) digits is 1327104, while the sum is 53.

The spelling of 100681428689 in words is "one hundred billion, six hundred eighty-one million, four hundred twenty-eight thousand, six hundred eighty-nine".