100845212173 has 2 divisors, whose sum is σ = 100845212174. Its totient is φ = 100845212172.

The previous prime is 100845212099. The next prime is 100845212183. The reversal of 100845212173 is 371212548001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73594466089 + 27250746084 = 271283^2 + 165078^2 .

It is a cyclic number.

It is not a de Polignac number, because 100845212173 - 2²⁵ = 100811657741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100845212183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50422606086 + 50422606087.

It is an arithmetic number, because the mean of its divisors is an integer number (50422606087).

Almost surely, 2^100845212173 is an apocalyptic number.

It is an amenable number.

100845212173 is a deficient number, since it is larger than the sum of its proper divisors (1).

100845212173 is an equidigital number, since it uses as much as digits as its factorization.

100845212173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 100845212173 in words is "one hundred billion, eight hundred forty-five million, two hundred twelve thousand, one hundred seventy-three".