49171522171 has 2 divisors, whose sum is σ = 49171522172. Its totient is φ = 49171522170.

The previous prime is 49171522133. The next prime is 49171522193. The reversal of 49171522171 is 17122517194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49171522171 - 2²⁹ = 48634651259 is a prime.

It is a super-2 number, since 2×49171522171² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49171522121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24585761085 + 24585761086.

It is an arithmetic number, because the mean of its divisors is an integer number (24585761086).

Almost surely, 2^49171522171 is an apocalyptic number.

49171522171 is a deficient number, since it is larger than the sum of its proper divisors (1).

49171522171 is an equidigital number, since it uses as much as digits as its factorization.

49171522171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 40.

The spelling of 49171522171 in words is "forty-nine billion, one hundred seventy-one million, five hundred twenty-two thousand, one hundred seventy-one".