102444201917 has 2 divisors, whose sum is σ = 102444201918. Its totient is φ = 102444201916.

The previous prime is 102444201887. The next prime is 102444201989. The reversal of 102444201917 is 719102444201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91094708761 + 11349493156 = 301819^2 + 106534^2 .

It is a cyclic number.

It is not a de Polignac number, because 102444201917 - 2⁸ = 102444201661 is a prime.

It is a super-2 number, since 2×102444201917² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102444200917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51222100958 + 51222100959.

It is an arithmetic number, because the mean of its divisors is an integer number (51222100959).

Almost surely, 2^102444201917 is an apocalyptic number.

It is an amenable number.

102444201917 is a deficient number, since it is larger than the sum of its proper divisors (1).

102444201917 is an equidigital number, since it uses as much as digits as its factorization.

102444201917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 102444201917 in words is "one hundred two billion, four hundred forty-four million, two hundred one thousand, nine hundred seventeen".