102090488417 has 4 divisors (see below), whose sum is σ = 102218582676. Its totient is φ = 101962394160.

The previous prime is 102090488363. The next prime is 102090488431. The reversal of 102090488417 is 714884090201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49543637056 + 52546851361 = 222584^2 + 229231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102090488417 is a prime.

It is a super-2 number, since 2×102090488417² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102090388417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64045934 + ... + 64047527.

It is an arithmetic number, because the mean of its divisors is an integer number (25554645669).

Almost surely, 2^102090488417 is an apocalyptic number.

It is an amenable number.

102090488417 is a deficient number, since it is larger than the sum of its proper divisors (128094259).

102090488417 is an equidigital number, since it uses as much as digits as its factorization.

102090488417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128094258.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 102090488417 in words is "one hundred two billion, ninety million, four hundred eighty-eight thousand, four hundred seventeen".