273799178856 has 504 divisors, whose sum is σ = 926117448210. Its totient is φ = 75628909440.

The previous prime is 273799178831. The next prime is 273799178857. The reversal of 273799178856 is 658871997372.

273799178856 is a `hidden beast` number, since 2 + 7 + 379 + 9 + 178 + 85 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 187979476356 + 85819702500 = 433566^2 + 292950^2 .

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (273799178857) by changing a digit.

It is a polite number, since it can be written in 125 ways as a sum of consecutive naturals, for example, 274622550 + ... + 274623546.

Almost surely, 2^273799178856 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 273799178856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463058724105).

273799178856 is an abundant number, since it is smaller than the sum of its proper divisors (652318269354).

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

273799178856 is an equidigital number, since it uses as much as digits as its factorization.

273799178856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1040 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 72.

The spelling of 273799178856 in words is "two hundred seventy-three billion, seven hundred ninety-nine million, one hundred seventy-eight thousand, eight hundred fifty-six".