127049921280 has 144 divisors (see below), whose sum is σ = 450850884960. Its totient is φ = 33879969792.

The previous prime is 127049921263. The next prime is 127049921293. The reversal of 127049921280 is 82129940721.

127049921280 is a `hidden beast` number, since 1 + 2 + 70 + 499 + 2 + 12 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×127049921280² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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, 1803547 + ... + 1872666.

Almost surely, 2^127049921280 is an apocalyptic number.

127049921280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127049921280 is an abundant number, since it is smaller than the sum of its proper divisors (323800963680).

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

127049921280 is an equidigital number, since it uses as much as digits as its factorization.

127049921280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676243 (or 3676223 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 127049921280 in words is "one hundred twenty-seven billion, forty-nine million, nine hundred twenty-one thousand, two hundred eighty".