245442151720 has 64 divisors (see below), whose sum is σ = 564185088000. Its totient is φ = 96076151808.

The previous prime is 245442151697. The next prime is 245442151733. The reversal of 245442151720 is 27151244542.

It is a self number, because there is not a number n which added to its sum of digits gives 245442151720.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13401 + ... + 700759.

It is an arithmetic number, because the mean of its divisors is an integer number (8815392000).

Almost surely, 2^245442151720 is an apocalyptic number.

245442151720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245442151720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282092544000).

245442151720 is an abundant number, since it is smaller than the sum of its proper divisors (318742936280).

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

245442151720 is a wasteful number, since it uses less digits than its factorization.

245442151720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687562 (or 687558 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 37.

The spelling of 245442151720 in words is "two hundred forty-five billion, four hundred forty-two million, one hundred fifty-one thousand, seven hundred twenty".