100391728771 has 2 divisors, whose sum is σ = 100391728772. Its totient is φ = 100391728770.

The previous prime is 100391728769. The next prime is 100391728793. The reversal of 100391728771 is 177827193001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100391728771 - 2¹ = 100391728769 is a prime.

Together with 100391728769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100391728741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50195864385 + 50195864386.

It is an arithmetic number, because the mean of its divisors is an integer number (50195864386).

Almost surely, 2^100391728771 is an apocalyptic number.

100391728771 is a deficient number, since it is larger than the sum of its proper divisors (1).

100391728771 is an equidigital number, since it uses as much as digits as its factorization.

100391728771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 100391728771 in words is "one hundred billion, three hundred ninety-one million, seven hundred twenty-eight thousand, seven hundred seventy-one".