253445444340 has 96 divisors (see below), whose sum is σ = 780256641024. Its totient is φ = 60957509760.

The previous prime is 253445444293. The next prime is 253445444387. The reversal of 253445444340 is 43444544352.

It is an interprime number because it is at equal distance from previous prime (253445444293) and next prime (253445444387).

It is a junction number, because it is equal to n+sod(n) for n = 253445444292 and 253445444301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1428024 + ... + 1595663.

It is an arithmetic number, because the mean of its divisors is an integer number (8127673344).

Almost surely, 2^253445444340 is an apocalyptic number.

253445444340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253445444340 is an abundant number, since it is smaller than the sum of its proper divisors (526811196684).

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

253445444340 is a wasteful number, since it uses less digits than its factorization.

253445444340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023837 (or 3023835 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 42.

Adding to 253445444340 its reverse (43444544352), we get a palindrome (296889988692).

The spelling of 253445444340 in words is "two hundred fifty-three billion, four hundred forty-five million, four hundred forty-four thousand, three hundred forty".