245344678648 has 16 divisors (see below), whose sum is σ = 464763761280. Its totient is φ = 121407675648.

The previous prime is 245344678639. The next prime is 245344678651. The reversal of 245344678648 is 846876443542.

It is a super-2 number, since 2×245344678648² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158082136 + ... + 158083687.

It is an arithmetic number, because the mean of its divisors is an integer number (29047735080).

Almost surely, 2^245344678648 is an apocalyptic number.

It is an amenable number.

245344678648 is a deficient number, since it is larger than the sum of its proper divisors (219419082632).

245344678648 is a wasteful number, since it uses less digits than its factorization.

245344678648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316165926 (or 316165922 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 61.

The spelling of 245344678648 in words is "two hundred forty-five billion, three hundred forty-four million, six hundred seventy-eight thousand, six hundred forty-eight".