245387154977 has 2 divisors, whose sum is σ = 245387154978. Its totient is φ = 245387154976.

The previous prime is 245387154967. The next prime is 245387155007. The reversal of 245387154977 is 779451783542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160288930321 + 85098224656 = 400361^2 + 291716^2 .

It is a cyclic number.

It is not a de Polignac number, because 245387154977 - 2¹² = 245387150881 is a prime.

It is not a weakly prime, because it can be changed into another prime (245387154967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122693577488 + 122693577489.

It is an arithmetic number, because the mean of its divisors is an integer number (122693577489).

Almost surely, 2^245387154977 is an apocalyptic number.

It is an amenable number.

245387154977 is a deficient number, since it is larger than the sum of its proper divisors (1).

245387154977 is an equidigital number, since it uses as much as digits as its factorization.

245387154977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59270400, while the sum is 62.

The spelling of 245387154977 in words is "two hundred forty-five billion, three hundred eighty-seven million, one hundred fifty-four thousand, nine hundred seventy-seven".