180778855798128 has 320 divisors, whose sum is σ = 559256511578112. Its totient is φ = 49231112325120.

The previous prime is 180778855798117. The next prime is 180778855798133. The reversal of 180778855798128 is 821897558877081.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5459436100 + ... + 5459469212.

Almost surely, 2^{180778855798128} 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 180778855798128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279628255789056).

180778855798128 is an abundant number, since it is smaller than the sum of its proper divisors (378477655779984).

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

180778855798128 is a wasteful number, since it uses less digits than its factorization.

180778855798128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41052 (or 41046 counting only the distinct ones).

The product of its (nonzero) digits is 5057740800, while the sum is 84.

The spelling of 180778855798128 in words is "one hundred eighty trillion, seven hundred seventy-eight billion, eight hundred fifty-five million, seven hundred ninety-eight thousand, one hundred twenty-eight".