100645444087 has 2 divisors, whose sum is σ = 100645444088. Its totient is φ = 100645444086.

The previous prime is 100645444061. The next prime is 100645444117. The reversal of 100645444087 is 780444546001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100645444087 - 2²³ = 100637055479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100645444057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50322722043 + 50322722044.

It is an arithmetic number, because the mean of its divisors is an integer number (50322722044).

Almost surely, 2^100645444087 is an apocalyptic number.

100645444087 is a deficient number, since it is larger than the sum of its proper divisors (1).

100645444087 is an equidigital number, since it uses as much as digits as its factorization.

100645444087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 100645444087 in words is "one hundred billion, six hundred forty-five million, four hundred forty-four thousand, eighty-seven".