127381780669 has 96 divisors (see below), whose sum is σ = 159734693888. Its totient is φ = 100769961600.

The previous prime is 127381780663. The next prime is 127381780697. The reversal of 127381780669 is 966087183721.

It is not a de Polignac number, because 127381780669 - 2¹¹ = 127381778621 is a prime.

It is a super-2 number, since 2×127381780669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127381780663) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 414924214 + ... + 414924520.

Almost surely, 2^127381780669 is an apocalyptic number.

It is an amenable number.

127381780669 is a deficient number, since it is larger than the sum of its proper divisors (32352913219).

127381780669 is a wasteful number, since it uses less digits than its factorization.

127381780669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 127381780669 in words is "one hundred twenty-seven billion, three hundred eighty-one million, seven hundred eighty thousand, six hundred sixty-nine".