180899365896 has 192 divisors, whose sum is σ = 521591616000. Its totient is φ = 56544998400.

The previous prime is 180899365877. The next prime is 180899365919. The reversal of 180899365896 is 698563998081.

180899365896 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 9 + 9 + 36 + 589 + 6 = 666.

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

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, 13628655 + ... + 13641921.

It is an arithmetic number, because the mean of its divisors is an integer number (2716623000).

Almost surely, 2^180899365896 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 180899365896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260795808000).

180899365896 is an abundant number, since it is smaller than the sum of its proper divisors (340692250104).

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

180899365896 is a wasteful number, since it uses less digits than its factorization.

180899365896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13500 (or 13493 counting only the distinct ones).

The product of its (nonzero) digits is 201553920, while the sum is 72.

The spelling of 180899365896 in words is "one hundred eighty billion, eight hundred ninety-nine million, three hundred sixty-five thousand, eight hundred ninety-six".