245555566668 has 72 divisors (see below), whose sum is σ = 631142287776. Its totient is φ = 80482348800.

The previous prime is 245555566603. The next prime is 245555566681. The reversal of 245555566668 is 866665555542.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 824608 + ... + 1082168.

It is an arithmetic number, because the mean of its divisors is an integer number (8765865108).

Almost surely, 2^245555566668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245555566668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315571143888).

245555566668 is an abundant number, since it is smaller than the sum of its proper divisors (385586721108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245555566668 is a wasteful number, since it uses less digits than its factorization.

245555566668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258015 (or 258010 counting only the distinct ones).

The product of its digits is 259200000, while the sum is 63.

The spelling of 245555566668 in words is "two hundred forty-five billion, five hundred fifty-five million, five hundred sixty-six thousand, six hundred sixty-eight".