127100794081 has 4 divisors (see below), whose sum is σ = 127205233092. Its totient is φ = 126996355072.

The previous prime is 127100794061. The next prime is 127100794091. The reversal of 127100794081 is 180497001721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180497001721 = 23 ⋅7847695727.

It can be written as a sum of positive squares in 2 ways, for example, as 66801571600 + 60299222481 = 258460^2 + 245559^2 .

It is a cyclic number.

It is not a de Polignac number, because 127100794081 - 2¹¹ = 127100792033 is a prime.

It is a super-2 number, since 2×127100794081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127100794021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52217680 + ... + 52220113.

It is an arithmetic number, because the mean of its divisors is an integer number (31801308273).

Almost surely, 2^127100794081 is an apocalyptic number.

It is an amenable number.

127100794081 is a deficient number, since it is larger than the sum of its proper divisors (104439011).

127100794081 is a wasteful number, since it uses less digits than its factorization.

127100794081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104439010.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 127100794081 in words is "one hundred twenty-seven billion, one hundred million, seven hundred ninety-four thousand, eighty-one".