253423373616 has 720 divisors, whose sum is σ = 884573883648. Its totient is φ = 67408588800.

The previous prime is 253423373597. The next prime is 253423373657. The reversal of 253423373616 is 616373324352.

253423373616 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 23 + 3 + 7 + 3 + 616 = 666.

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 143 ways as a sum of consecutive naturals, for example, 1400129046 + ... + 1400129226.

Almost surely, 2^253423373616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253423373616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442286941824).

253423373616 is an abundant number, since it is smaller than the sum of its proper divisors (631150510032).

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

253423373616 is a wasteful number, since it uses less digits than its factorization.

253423373616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 434 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 45.

Adding to 253423373616 its reverse (616373324352), we get a palindrome (869796697968).

The spelling of 253423373616 in words is "two hundred fifty-three billion, four hundred twenty-three million, three hundred seventy-three thousand, six hundred sixteen".