556377095977 has 2 divisors, whose sum is σ = 556377095978. Its totient is φ = 556377095976.

The previous prime is 556377095947. The next prime is 556377096031. The reversal of 556377095977 is 779590773655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550777716736 + 5599379241 = 742144^2 + 74829^2 .

It is a cyclic number.

It is not a de Polignac number, because 556377095977 - 2¹¹ = 556377093929 is a prime.

It is not a weakly prime, because it can be changed into another prime (556377095917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278188547988 + 278188547989.

It is an arithmetic number, because the mean of its divisors is an integer number (278188547989).

Almost surely, 2^556377095977 is an apocalyptic number.

It is an amenable number.

556377095977 is a deficient number, since it is larger than the sum of its proper divisors (1).

556377095977 is an equidigital number, since it uses as much as digits as its factorization.

556377095977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437582250, while the sum is 70.

The spelling of 556377095977 in words is "five hundred fifty-six billion, three hundred seventy-seven million, ninety-five thousand, nine hundred seventy-seven".