127785197876 has 12 divisors (see below), whose sum is σ = 255570395808. Its totient is φ = 54765084792.

The previous prime is 127785197821. The next prime is 127785197893. The reversal of 127785197876 is 678791587721.

127785197876 is an admirable number.

It is a super-2 number, since 2×127785197876² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2281878506 + ... + 2281878561.

It is an arithmetic number, because the mean of its divisors is an integer number (21297532984).

Almost surely, 2^127785197876 is an apocalyptic number.

It is an amenable number.

127785197876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

127785197876 is a wasteful number, since it uses less digits than its factorization.

127785197876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563757078 (or 4563757076 counting only the distinct ones).

The product of its digits is 82978560, while the sum is 68.

The spelling of 127785197876 in words is "one hundred twenty-seven billion, seven hundred eighty-five million, one hundred ninety-seven thousand, eight hundred seventy-six".