245343240220505 has 32 divisors (see below), whose sum is σ = 341515227456000. Its totient is φ = 165717358410240.

The previous prime is 245343240220487. The next prime is 245343240220577. The reversal of 245343240220505 is 505022042343542.

It is not a de Polignac number, because 245343240220505 - 2¹² = 245343240216409 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41418380 + ... + 46969869.

It is an arithmetic number, because the mean of its divisors is an integer number (10672350858000).

Almost surely, 2^{245343240220505} is an apocalyptic number.

It is an amenable number.

245343240220505 is a deficient number, since it is larger than the sum of its proper divisors (96171987235495).

245343240220505 is a wasteful number, since it uses less digits than its factorization.

245343240220505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88389449.

The product of its (nonzero) digits is 1152000, while the sum is 41.

The spelling of 245343240220505 in words is "two hundred forty-five trillion, three hundred forty-three billion, two hundred forty million, two hundred twenty thousand, five hundred five".