245312521067 has 2 divisors, whose sum is σ = 245312521068. Its totient is φ = 245312521066.

The previous prime is 245312521063. The next prime is 245312521127. The reversal of 245312521067 is 760125213542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245312521067 - 2² = 245312521063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245312521067.

It is not a weakly prime, because it can be changed into another prime (245312521063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122656260533 + 122656260534.

It is an arithmetic number, because the mean of its divisors is an integer number (122656260534).

Almost surely, 2^245312521067 is an apocalyptic number.

245312521067 is a deficient number, since it is larger than the sum of its proper divisors (1).

245312521067 is an equidigital number, since it uses as much as digits as its factorization.

245312521067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 245312521067 in words is "two hundred forty-five billion, three hundred twelve million, five hundred twenty-one thousand, sixty-seven".