156106171649873 has 2 divisors, whose sum is σ = 156106171649874. Its totient is φ = 156106171649872.

The previous prime is 156106171649861. The next prime is 156106171649899. The reversal of 156106171649873 is 378946171601651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92683615236289 + 63422556413584 = 9627233^2 + 7963828^2 .

It is an emirp because it is prime and its reverse (378946171601651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156106171649873 - 2⁶ = 156106171649809 is a prime.

It is a super-2 number, since 2×156106171649873² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (156106171649473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78053085824936 + 78053085824937.

It is an arithmetic number, because the mean of its divisors is an integer number (78053085824937).

Almost surely, 2^{156106171649873} is an apocalyptic number.

It is an amenable number.

156106171649873 is a deficient number, since it is larger than the sum of its proper divisors (1).

156106171649873 is an equidigital number, since it uses as much as digits as its factorization.

156106171649873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45722880, while the sum is 65.

The spelling of 156106171649873 in words is "one hundred fifty-six trillion, one hundred six billion, one hundred seventy-one million, six hundred forty-nine thousand, eight hundred seventy-three".