127863794505 has 16 divisors (see below), whose sum is σ = 215349549120. Its totient is φ = 64604864448.

The previous prime is 127863794503. The next prime is 127863794557. The reversal of 127863794505 is 505497368721.

It is not a de Polignac number, because 127863794505 - 2¹ = 127863794503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (127863794501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224322162 + ... + 224322731.

It is an arithmetic number, because the mean of its divisors is an integer number (13459346820).

It is a 1-persistent number, because it is pandigital, but 2⋅127863794505 = 255727589010 is not.

Almost surely, 2^127863794505 is an apocalyptic number.

127863794505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127863794505 is a deficient number, since it is larger than the sum of its proper divisors (87485754615).

127863794505 is a wasteful number, since it uses less digits than its factorization.

127863794505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448644920.

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 127863794505 in words is "one hundred twenty-seven billion, eight hundred sixty-three million, seven hundred ninety-four thousand, five hundred five".