245340040140 has 144 divisors (see below), whose sum is σ = 807210986400. Its totient is φ = 59956844544.

The previous prime is 245340040103. The next prime is 245340040151. The reversal of 245340040140 is 41040043542.

It is a happy number.

245340040140 is a `hidden beast` number, since 245 + 3 + 400 + 4 + 0 + 14 + 0 = 666.

It is a super-2 number, since 2×245340040140² (a number of 24 digits) contains 22 as substring.

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, 51885 + ... + 702404.

It is an arithmetic number, because the mean of its divisors is an integer number (5605631850).

Almost surely, 2^245340040140 is an apocalyptic number.

245340040140 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 245340040140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403605493200).

245340040140 is an abundant number, since it is smaller than the sum of its proper divisors (561870946260).

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

245340040140 is a wasteful number, since it uses less digits than its factorization.

245340040140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754456 (or 754451 counting only the distinct ones).

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

Adding to 245340040140 its reverse (41040043542), we get a palindrome (286380083682).

The spelling of 245340040140 in words is "two hundred forty-five billion, three hundred forty million, forty thousand, one hundred forty".