245421324555240 has 64 divisors (see below), whose sum is σ = 736338717236160. Its totient is φ = 65439042675200.

The previous prime is 245421324555227. The next prime is 245421324555257. The reversal of 245421324555240 is 42555423124542.

It is a happy number.

It is a super-2 number, since 2×245421324555240² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245421324555240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102623469 + ... + 104987708.

It is an arithmetic number, because the mean of its divisors is an integer number (11505292456815).

Almost surely, 2^{245421324555240} is an apocalyptic number.

245421324555240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245421324555240 is an abundant number, since it is smaller than the sum of its proper divisors (490917392680920).

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

245421324555240 is a wasteful number, since it uses less digits than its factorization.

245421324555240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207621042 (or 207621038 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 48.

Adding to 245421324555240 its reverse (42555423124542), we get a palindrome (287976747679782).

The spelling of 245421324555240 in words is "two hundred forty-five trillion, four hundred twenty-one billion, three hundred twenty-four million, five hundred fifty-five thousand, two hundred forty".