317828840550 has 192 divisors, whose sum is σ = 899417058624. Its totient is φ = 73580544000.

The previous prime is 317828840453. The next prime is 317828840561. The reversal of 317828840550 is 55048828713.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 317828840493 and 317828840502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66198150 + ... + 66202950.

It is an arithmetic number, because the mean of its divisors is an integer number (4684463847).

Almost surely, 2^317828840550 is an apocalyptic number.

317828840550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 317828840550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449708529312).

317828840550 is an abundant number, since it is smaller than the sum of its proper divisors (581588218074).

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

317828840550 is a wasteful number, since it uses less digits than its factorization.

317828840550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6843 (or 6838 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 317828840550 in words is "three hundred seventeen billion, eight hundred twenty-eight million, eight hundred forty thousand, five hundred fifty".