245123335240 has 192 divisors, whose sum is σ = 683300914560. Its totient is φ = 77256345600.

The previous prime is 245123335207. The next prime is 245123335271. The reversal of 245123335240 is 42533321542.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 245123335196 and 245123335205.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8787315 + ... + 8815165.

It is an arithmetic number, because the mean of its divisors is an integer number (3558858930).

Almost surely, 2^245123335240 is an apocalyptic number.

245123335240 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 245123335240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341650457280).

245123335240 is an abundant number, since it is smaller than the sum of its proper divisors (438177579320).

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

245123335240 is a wasteful number, since it uses less digits than its factorization.

245123335240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27972 (or 27925 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 245123335240 its reverse (42533321542), we get a palindrome (287656656782).

The spelling of 245123335240 in words is "two hundred forty-five billion, one hundred twenty-three million, three hundred thirty-five thousand, two hundred forty".