245315315440 has 160 divisors (see below), whose sum is σ = 643236080256. Its totient is φ = 86329098240.

The previous prime is 245315315369. The next prime is 245315315449. The reversal of 245315315440 is 44513513542.

It is a self number, because there is not a number n which added to its sum of digits gives 245315315440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245315315449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6703272 + ... + 6739768.

Almost surely, 2^245315315440 is an apocalyptic number.

245315315440 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 245315315440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321618040128).

245315315440 is an abundant number, since it is smaller than the sum of its proper divisors (397920764816).

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

245315315440 is a wasteful number, since it uses less digits than its factorization.

245315315440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36827 (or 36821 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 245315315440 its reverse (44513513542), we get a palindrome (289828828982).

The spelling of 245315315440 in words is "two hundred forty-five billion, three hundred fifteen million, three hundred fifteen thousand, four hundred forty".