173378853648 has 1440 divisors, whose sum is σ = 707514716160. Its totient is φ = 40236134400.

The previous prime is 173378853643. The next prime is 173378853653. The reversal of 173378853648 is 846358873371.

173378853648 is a `hidden beast` number, since 17 + 3 + 3 + 7 + 88 + 536 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (173378853643) and next prime (173378853653).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173378853643) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1365187761 + ... + 1365187887.

It is an arithmetic number, because the mean of its divisors is an integer number (491329664).

Almost surely, 2^173378853648 is an apocalyptic number.

173378853648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173378853648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353757358080).

173378853648 is an abundant number, since it is smaller than the sum of its proper divisors (534135862512).

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

173378853648 is a wasteful number, since it uses less digits than its factorization.

173378853648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 204 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 173378853648 in words is "one hundred seventy-three billion, three hundred seventy-eight million, eight hundred fifty-three thousand, six hundred forty-eight".