245720201808 has 20 divisors (see below), whose sum is σ = 634777188128. Its totient is φ = 81906733920.

The previous prime is 245720201777. The next prime is 245720201821. The reversal of 245720201808 is 808102027542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559585388 + ... + 2559585483.

Almost surely, 2^245720201808 is an apocalyptic number.

It is an amenable number.

245720201808 is an abundant number, since it is smaller than the sum of its proper divisors (389056986320).

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

245720201808 is a wasteful number, since it uses less digits than its factorization.

245720201808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119170882 (or 5119170876 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 245720201808 in words is "two hundred forty-five billion, seven hundred twenty million, two hundred one thousand, eight hundred eight".