115477640203777 has 2 divisors, whose sum is σ = 115477640203778. Its totient is φ = 115477640203776.

The previous prime is 115477640203729. The next prime is 115477640203811. The reversal of 115477640203777 is 777302046774511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82848879762496 + 32628760441281 = 9102136^2 + 5712159^2 .

It is a cyclic number.

It is not a de Polignac number, because 115477640203777 - 2¹⁹ = 115477639679489 is a prime.

It is not a weakly prime, because it can be changed into another prime (115477640203577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57738820101888 + 57738820101889.

It is an arithmetic number, because the mean of its divisors is an integer number (57738820101889).

Almost surely, 2^{115477640203777} is an apocalyptic number.

It is an amenable number.

115477640203777 is a deficient number, since it is larger than the sum of its proper divisors (1).

115477640203777 is an equidigital number, since it uses as much as digits as its factorization.

115477640203777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48404160, while the sum is 61.

The spelling of 115477640203777 in words is "one hundred fifteen trillion, four hundred seventy-seven billion, six hundred forty million, two hundred three thousand, seven hundred seventy-seven".