12315635377 has 2 divisors, whose sum is σ = 12315635378. Its totient is φ = 12315635376.

The previous prime is 12315635357. The next prime is 12315635399. The reversal of 12315635377 is 77353651321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11515650721 + 799984656 = 107311^2 + 28284^2 .

It is a cyclic number.

It is not a de Polignac number, because 12315635377 - 2¹⁹ = 12315111089 is a prime.

It is not a weakly prime, because it can be changed into another prime (12315635317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157817688 + 6157817689.

It is an arithmetic number, because the mean of its divisors is an integer number (6157817689).

Almost surely, 2^12315635377 is an apocalyptic number.

It is an amenable number.

12315635377 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315635377 is an equidigital number, since it uses as much as digits as its factorization.

12315635377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 43.

The spelling of 12315635377 in words is "twelve billion, three hundred fifteen million, six hundred thirty-five thousand, three hundred seventy-seven".