127121485872 has 20 divisors (see below), whose sum is σ = 328397171960. Its totient is φ = 42373828608.

The previous prime is 127121485847. The next prime is 127121485879. The reversal of 127121485872 is 278584121721.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 2648364289 = 127121485872 / (1 + 2 + 7 + 1 + 2 + 1 + 4 + 8 + 5 + 8 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (127121485879) 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 3 ways as a sum of consecutive naturals, for example, 1324182097 + ... + 1324182192.

It is an arithmetic number, because the mean of its divisors is an integer number (16419858598).

Almost surely, 2^127121485872 is an apocalyptic number.

127121485872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

127121485872 is an abundant number, since it is smaller than the sum of its proper divisors (201275686088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127121485872 is a wasteful number, since it uses less digits than its factorization.

127121485872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648364300 (or 2648364294 counting only the distinct ones).

The product of its digits is 501760, while the sum is 48.

The spelling of 127121485872 in words is "one hundred twenty-seven billion, one hundred twenty-one million, four hundred eighty-five thousand, eight hundred seventy-two".