127899056937601 has 2 divisors, whose sum is σ = 127899056937602. Its totient is φ = 127899056937600.

The previous prime is 127899056937593. The next prime is 127899056937623. The reversal of 127899056937601 is 106739650998721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107091555735025 + 20807501202576 = 10348505^2 + 4561524^2 .

It is a cyclic number.

It is not a de Polignac number, because 127899056937601 - 2³ = 127899056937593 is a prime.

It is not a weakly prime, because it can be changed into another prime (127899056934601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63949528468800 + 63949528468801.

It is an arithmetic number, because the mean of its divisors is an integer number (63949528468801).

Almost surely, 2^{127899056937601} is an apocalyptic number.

It is an amenable number.

127899056937601 is a deficient number, since it is larger than the sum of its proper divisors (1).

127899056937601 is an equidigital number, since it uses as much as digits as its factorization.

127899056937601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308629440, while the sum is 73.

The spelling of 127899056937601 in words is "one hundred twenty-seven trillion, eight hundred ninety-nine billion, fifty-six million, nine hundred thirty-seven thousand, six hundred one".