100421745731759 has 2 divisors, whose sum is σ = 100421745731760. Its totient is φ = 100421745731758.

The previous prime is 100421745731753. The next prime is 100421745731807. The reversal of 100421745731759 is 957137547124001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100421745731759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100421745731753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210872865879 + 50210872865880.

It is an arithmetic number, because the mean of its divisors is an integer number (50210872865880).

Almost surely, 2^{100421745731759} is an apocalyptic number.

100421745731759 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421745731759 is an equidigital number, since it uses as much as digits as its factorization.

100421745731759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7408800, while the sum is 56.

The spelling of 100421745731759 in words is "one hundred trillion, four hundred twenty-one billion, seven hundred forty-five million, seven hundred thirty-one thousand, seven hundred fifty-nine".