245431411987 has 2 divisors, whose sum is σ = 245431411988. Its totient is φ = 245431411986.

The previous prime is 245431411969. The next prime is 245431412033. The reversal of 245431411987 is 789114134542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245431411987 - 2¹¹ = 245431409939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245431411987.

It is not a weakly prime, because it can be changed into another prime (245431411087) 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, 122715705993 + 122715705994.

It is an arithmetic number, because the mean of its divisors is an integer number (122715705994).

Almost surely, 2^245431411987 is an apocalyptic number.

245431411987 is a deficient number, since it is larger than the sum of its proper divisors (1).

245431411987 is an equidigital number, since it uses as much as digits as its factorization.

245431411987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The spelling of 245431411987 in words is "two hundred forty-five billion, four hundred thirty-one million, four hundred eleven thousand, nine hundred eighty-seven".