253719317168 has 80 divisors (see below), whose sum is σ = 528746634240. Its totient is φ = 117562752000.

The previous prime is 253719317077. The next prime is 253719317197. The reversal of 253719317168 is 861713917352.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36445208 + ... + 36452168.

It is an arithmetic number, because the mean of its divisors is an integer number (6609332928).

Almost surely, 2^253719317168 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 253719317168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264373317120).

253719317168 is an abundant number, since it is smaller than the sum of its proper divisors (275027317072).

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

253719317168 is a wasteful number, since it uses less digits than its factorization.

253719317168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9586 (or 9580 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 53.

The spelling of 253719317168 in words is "two hundred fifty-three billion, seven hundred nineteen million, three hundred seventeen thousand, one hundred sixty-eight".