180677747838 has 96 divisors (see below), whose sum is σ = 449410477824. Its totient is φ = 47272232448.

The previous prime is 180677747837. The next prime is 180677747839. The reversal of 180677747838 is 838747776081.

180677747838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (180677747837) and next prime (180677747839).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180677747837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 885045 + ... + 1069887.

It is an arithmetic number, because the mean of its divisors is an integer number (4681359144).

Almost surely, 2^180677747838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180677747838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224705238912).

180677747838 is an abundant number, since it is smaller than the sum of its proper divisors (268732729986).

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

180677747838 is a wasteful number, since it uses less digits than its factorization.

180677747838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184946 (or 184909 counting only the distinct ones).

The product of its (nonzero) digits is 88510464, while the sum is 66.

The spelling of 180677747838 in words is "one hundred eighty billion, six hundred seventy-seven million, seven hundred forty-seven thousand, eight hundred thirty-eight".