180428537258640 has 240 divisors, whose sum is σ = 682347923652096. Its totient is φ = 42329275545600.

The previous prime is 180428537258633. The next prime is 180428537258693. The reversal of 180428537258640 is 46852735824081.

180428537258640 is a `hidden beast` number, since 1 + 8 + 0 + 4 + 2 + 8 + 5 + 3 + 7 + 2 + 586 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 367196109 + ... + 367687148.

Almost surely, 2^{180428537258640} is an apocalyptic number.

180428537258640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180428537258640 is an abundant number, since it is smaller than the sum of its proper divisors (501919386393456).

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

180428537258640 is a wasteful number, since it uses less digits than its factorization.

180428537258640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734883318 (or 734883309 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 63.

The spelling of 180428537258640 in words is "one hundred eighty trillion, four hundred twenty-eight billion, five hundred thirty-seven million, two hundred fifty-eight thousand, six hundred forty".