245342315522340 has 36 divisors (see below), whose sum is σ = 744205023751644. Its totient is φ = 65424617472576.

The previous prime is 245342315522321. The next prime is 245342315522407. The reversal of 245342315522340 is 43225513243542.

It is a happy number.

245342315522340 is a `hidden beast` number, since 2 + 4 + 5 + 3 + 4 + 2 + 31 + 552 + 23 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 112455462668004 + 132886852854336 = 10604502^2 + 11527656^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681506431827 + ... + 681506432186.

It is an arithmetic number, because the mean of its divisors is an integer number (20672361770879).

Almost surely, 2^{245342315522340} is an apocalyptic number.

245342315522340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245342315522340 is an abundant number, since it is smaller than the sum of its proper divisors (498862708229304).

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

245342315522340 is a wasteful number, since it uses less digits than its factorization.

245342315522340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363012864028 (or 1363012864023 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 45.

Adding to 245342315522340 its reverse (43225513243542), we get a palindrome (288567828765882).

The spelling of 245342315522340 in words is "two hundred forty-five trillion, three hundred forty-two billion, three hundred fifteen million, five hundred twenty-two thousand, three hundred forty".