127681868725352 has 16 divisors (see below), whose sum is σ = 239410605587940. Its totient is φ = 63839040568576.

The previous prime is 127681868725349. The next prime is 127681868725361. The reversal of 127681868725352 is 253527868186721.

It can be written as a sum of positive squares in 2 ways, for example, as 127554752232196 + 127116493156 = 11294014^2 + 356534^2 .

It is a super-2 number, since 2×127681868725352² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236437703 + ... + 236977110.

Almost surely, 2^{127681868725352} is an apocalyptic number.

It is an amenable number.

127681868725352 is a deficient number, since it is larger than the sum of its proper divisors (111728736862588).

127681868725352 is a wasteful number, since it uses less digits than its factorization.

127681868725352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473448532 (or 473448528 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 71.

The spelling of 127681868725352 in words is "one hundred twenty-seven trillion, six hundred eighty-one billion, eight hundred sixty-eight million, seven hundred twenty-five thousand, three hundred fifty-two".