556127345381 has 2 divisors, whose sum is σ = 556127345382. Its totient is φ = 556127345380.

The previous prime is 556127345363. The next prime is 556127345401. The reversal of 556127345381 is 183543721655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398244296356 + 157883049025 = 631066^2 + 397345^2 .

It is a cyclic number.

It is not a de Polignac number, because 556127345381 - 2⁶ = 556127345317 is a prime.

It is a super-2 number, since 2×556127345381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556127375381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278063672690 + 278063672691.

It is an arithmetic number, because the mean of its divisors is an integer number (278063672691).

Almost surely, 2^556127345381 is an apocalyptic number.

It is an amenable number.

556127345381 is a deficient number, since it is larger than the sum of its proper divisors (1).

556127345381 is an equidigital number, since it uses as much as digits as its factorization.

556127345381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024000, while the sum is 50.

The spelling of 556127345381 in words is "five hundred fifty-six billion, one hundred twenty-seven million, three hundred forty-five thousand, three hundred eighty-one".