7127404878361 has 2 divisors, whose sum is σ = 7127404878362. Its totient is φ = 7127404878360.

The previous prime is 7127404878353. The next prime is 7127404878403. The reversal of 7127404878361 is 1638784047217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7125397390336 + 2007488025 = 2669344^2 + 44805^2 .

It is a cyclic number.

It is not a de Polignac number, because 7127404878361 - 2³ = 7127404878353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7127404878296 and 7127404878305.

It is not a weakly prime, because it can be changed into another prime (7127404878311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3563702439180 + 3563702439181.

It is an arithmetic number, because the mean of its divisors is an integer number (3563702439181).

Almost surely, 2^{7127404878361} is an apocalyptic number.

It is an amenable number.

7127404878361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7127404878361 is an equidigital number, since it uses as much as digits as its factorization.

7127404878361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 7127404878361 in words is "seven trillion, one hundred twenty-seven billion, four hundred four million, eight hundred seventy-eight thousand, three hundred sixty-one".