102179128291 has 2 divisors, whose sum is σ = 102179128292. Its totient is φ = 102179128290.

The previous prime is 102179128279. The next prime is 102179128333. The reversal of 102179128291 is 192821971201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102179128291 - 2³⁵ = 67819389923 is a prime.

It is not a weakly prime, because it can be changed into another prime (102179128211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51089564145 + 51089564146.

It is an arithmetic number, because the mean of its divisors is an integer number (51089564146).

Almost surely, 2^102179128291 is an apocalyptic number.

102179128291 is a deficient number, since it is larger than the sum of its proper divisors (1).

102179128291 is an equidigital number, since it uses as much as digits as its factorization.

102179128291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 102179128291 in words is "one hundred two billion, one hundred seventy-nine million, one hundred twenty-eight thousand, two hundred ninety-one".