20150171983 has 2 divisors, whose sum is σ = 20150171984. Its totient is φ = 20150171982.

The previous prime is 20150171933. The next prime is 20150172013. The reversal of 20150171983 is 38917105102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20150171983 - 2²⁵ = 20116617551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20150171903) 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 as a sum of consecutive naturals, namely, 10075085991 + 10075085992.

It is an arithmetic number, because the mean of its divisors is an integer number (10075085992).

Almost surely, 2^20150171983 is an apocalyptic number.

20150171983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20150171983 is an equidigital number, since it uses as much as digits as its factorization.

20150171983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 20150171983 in words is "twenty billion, one hundred fifty million, one hundred seventy-one thousand, nine hundred eighty-three".