127819899149 has 16 divisors (see below), whose sum is σ = 136179532800. Its totient is φ = 119555124480.

The previous prime is 127819899131. The next prime is 127819899157. The reversal of 127819899149 is 941998918721.

It is not a de Polignac number, because 127819899149 - 2³⁶ = 59100422413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127819899169) 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 in 15 ways as a sum of consecutive naturals, for example, 2897639 + ... + 2941419.

It is an arithmetic number, because the mean of its divisors is an integer number (8511220800).

Almost surely, 2^127819899149 is an apocalyptic number.

It is an amenable number.

127819899149 is a deficient number, since it is larger than the sum of its proper divisors (8359633651).

127819899149 is a wasteful number, since it uses less digits than its factorization.

127819899149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44860.

The product of its digits is 23514624, while the sum is 68.

The spelling of 127819899149 in words is "one hundred twenty-seven billion, eight hundred nineteen million, eight hundred ninety-nine thousand, one hundred forty-nine".