245240044040 has 32 divisors (see below), whose sum is σ = 554591081880. Its totient is φ = 97598065152.

The previous prime is 245240044037. The next prime is 245240044043. The reversal of 245240044040 is 40440042542.

It is an interprime number because it is at equal distance from previous prime (245240044037) and next prime (245240044043).

It can be written as a sum of positive squares in 4 ways, for example, as 235052371684 + 10187672356 = 484822^2 + 100934^2 .

It is a super-2 number, since 2×245240044040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245240043994 and 245240044012.

It is not an unprimeable number, because it can be changed into a prime (245240044043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15553037 + ... + 15568796.

Almost surely, 2^245240044040 is an apocalyptic number.

245240044040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245240044040 is an abundant number, since it is smaller than the sum of its proper divisors (309351037840).

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

245240044040 is a wasteful number, since it uses less digits than its factorization.

245240044040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31122041 (or 31122037 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 29.

Adding to 245240044040 its reverse (40440042542), we get a palindrome (285680086582).

The spelling of 245240044040 in words is "two hundred forty-five billion, two hundred forty million, forty-four thousand, forty".