12355699177 has 2 divisors, whose sum is σ = 12355699178. Its totient is φ = 12355699176.

The previous prime is 12355699157. The next prime is 12355699219. The reversal of 12355699177 is 77199655321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9373337856 + 2982361321 = 96816^2 + 54611^2 .

It is a cyclic number.

It is not a de Polignac number, because 12355699177 - 2⁷ = 12355699049 is a prime.

It is not a weakly prime, because it can be changed into another prime (12355699157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177849588 + 6177849589.

It is an arithmetic number, because the mean of its divisors is an integer number (6177849589).

Almost surely, 2^12355699177 is an apocalyptic number.

It is an amenable number.

12355699177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12355699177 is an equidigital number, since it uses as much as digits as its factorization.

12355699177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3572100, while the sum is 55.

The spelling of 12355699177 in words is "twelve billion, three hundred fifty-five million, six hundred ninety-nine thousand, one hundred seventy-seven".