127478989692 has 72 divisors (see below), whose sum is σ = 323033911200. Its totient is φ = 42388254720.

The previous prime is 127478989669. The next prime is 127478989697. The reversal of 127478989692 is 296989874721.

127478989692 is a `hidden beast` number, since 1 + 2 + 7 + 478 + 98 + 9 + 69 + 2 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 127478989692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127478989697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33893092 + ... + 33896852.

It is an arithmetic number, because the mean of its divisors is an integer number (4486582100).

Almost surely, 2^127478989692 is an apocalyptic number.

127478989692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

127478989692 is an abundant number, since it is smaller than the sum of its proper divisors (195554921508).

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

127478989692 is a wasteful number, since it uses less digits than its factorization.

127478989692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843 (or 5838 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 72.

Adding to 127478989692 its sum of digits (72), we get a square (127478989764 = 357042²).

The spelling of 127478989692 in words is "one hundred twenty-seven billion, four hundred seventy-eight million, nine hundred eighty-nine thousand, six hundred ninety-two".