127857602473681 has 16 divisors (see below), whose sum is σ = 130932649710720. Its totient is φ = 124787182988160.

The previous prime is 127857602473649. The next prime is 127857602473703. The reversal of 127857602473681 is 186374206758721.

It is a cyclic number.

It is not a de Polignac number, because 127857602473681 - 2⁵ = 127857602473649 is a prime.

It is a super-2 number, since 2×127857602473681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127857602473781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1677200836 + ... + 1677277066.

It is an arithmetic number, because the mean of its divisors is an integer number (8183290606920).

Almost surely, 2^{127857602473681} is an apocalyptic number.

It is an amenable number.

127857602473681 is a deficient number, since it is larger than the sum of its proper divisors (3075047237039).

127857602473681 is a wasteful number, since it uses less digits than its factorization.

127857602473681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106056.

The product of its (nonzero) digits is 189665280, while the sum is 67.

The spelling of 127857602473681 in words is "one hundred twenty-seven trillion, eight hundred fifty-seven billion, six hundred two million, four hundred seventy-three thousand, six hundred eighty-one".