49171489399 has 2 divisors, whose sum is σ = 49171489400. Its totient is φ = 49171489398.

The previous prime is 49171489391. The next prime is 49171489421. The reversal of 49171489399 is 99398417194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49171489399 - 2³ = 49171489391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49171489399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49171489391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24585744699 + 24585744700.

It is an arithmetic number, because the mean of its divisors is an integer number (24585744700).

Almost surely, 2^49171489399 is an apocalyptic number.

49171489399 is a deficient number, since it is larger than the sum of its proper divisors (1).

49171489399 is an equidigital number, since it uses as much as digits as its factorization.

49171489399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 64.

The spelling of 49171489399 in words is "forty-nine billion, one hundred seventy-one million, four hundred eighty-nine thousand, three hundred ninety-nine".