127478989764 has 81 divisors (see below), whose sum is σ = 374893034061. Its totient is φ = 36418284000.

The previous prime is 127478989753. The next prime is 127478989783. The reversal of 127478989764 is 467989874721.

The square root of 127478989764 is 357042.

It is a perfect power (a square), and thus also a powerful number.

127478989764 is a `hidden beast` number, since 1 + 2 + 7 + 478 + 9 + 8 + 97 + 64 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10597055364 + 116881934400 = 102942^2 + 341880^2 .

It is a junction number, because it is equal to n+sod(n) for n = 127478989692 and 127478989701.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 14991514 + ... + 15000014.

Almost surely, 2^127478989764 is an apocalyptic number.

127478989764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

127478989764 is the 357042-nd square number.

It is an amenable number.

127478989764 is an abundant number, since it is smaller than the sum of its proper divisors (247414044297).

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

127478989764 is an frugal number, since it uses more digits than its factorization.

127478989764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17026 (or 8513 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 72.

The spelling of 127478989764 in words is "one hundred twenty-seven billion, four hundred seventy-eight million, nine hundred eighty-nine thousand, seven hundred sixty-four".