245275778670 has 128 divisors (see below), whose sum is σ = 661790352384. Its totient is φ = 57725758464.

The previous prime is 245275778641. The next prime is 245275778749. The reversal of 245275778670 is 76877572542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28726642 + ... + 28735178.

It is an arithmetic number, because the mean of its divisors is an integer number (5170237128).

Almost surely, 2^245275778670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245275778670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330895176192).

245275778670 is an abundant number, since it is smaller than the sum of its proper divisors (416514573714).

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

245275778670 is a wasteful number, since it uses less digits than its factorization.

245275778670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11786.

The product of its (nonzero) digits is 46099200, while the sum is 60.

The spelling of 245275778670 in words is "two hundred forty-five billion, two hundred seventy-five million, seven hundred seventy-eight thousand, six hundred seventy".