245546743664 has 20 divisors (see below), whose sum is σ = 481092288480. Its totient is φ = 121393895040.

The previous prime is 245546743643. The next prime is 245546743681. The reversal of 245546743664 is 466347645542.

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, 86215832 + ... + 86218679.

It is an arithmetic number, because the mean of its divisors is an integer number (24054614424).

Almost surely, 2^245546743664 is an apocalyptic number.

It is an amenable number.

245546743664 is a deficient number, since it is larger than the sum of its proper divisors (235545544816).

245546743664 is a wasteful number, since it uses less digits than its factorization.

245546743664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172434608 (or 172434602 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 56.

The spelling of 245546743664 in words is "two hundred forty-five billion, five hundred forty-six million, seven hundred forty-three thousand, six hundred sixty-four".