245321240004 has 96 divisors (see below), whose sum is σ = 644725065600. Its totient is φ = 81665169408.

The previous prime is 245321239993. The next prime is 245321240011. The reversal of 245321240004 is 400042123542.

245321240004 is a `hidden beast` number, since 2 + 4 + 532 + 124 + 0 + 0 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 245321240004.

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 31 ways as a sum of consecutive naturals, for example, 6708979 + ... + 6745445.

It is an arithmetic number, because the mean of its divisors is an integer number (6715886100).

Almost surely, 2^245321240004 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 245321240004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322362532800).

245321240004 is an abundant number, since it is smaller than the sum of its proper divisors (399403825596).

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

245321240004 is an equidigital number, since it uses as much as digits as its factorization.

245321240004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37261 (or 37241 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 245321240004 its reverse (400042123542), we get a palindrome (645363363546).

The spelling of 245321240004 in words is "two hundred forty-five billion, three hundred twenty-one million, two hundred forty thousand, four".