18077032477088 has 144 divisors (see below), whose sum is σ = 40458011819400. Its totient is φ = 7902592008192.

The previous prime is 18077032477039. The next prime is 18077032477103. The reversal of 18077032477088 is 88077423077081.

It can be written as a sum of positive squares in 4 ways, for example, as 11720845239184 + 6356187237904 = 3423572^2 + 2521148^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18077032477088.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1148688356 + ... + 1148704092.

Almost surely, 2^{18077032477088} 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 18077032477088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20229005909700).

18077032477088 is an abundant number, since it is smaller than the sum of its proper divisors (22380979342312).

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

18077032477088 is a wasteful number, since it uses less digits than its factorization.

18077032477088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23447 (or 23420 counting only the distinct ones).

The product of its (nonzero) digits is 29503488, while the sum is 62.

The spelling of 18077032477088 in words is "eighteen trillion, seventy-seven billion, thirty-two million, four hundred seventy-seven thousand, eighty-eight".