149800165800 has 96 divisors (see below), whose sum is σ = 464775922080. Its totient is φ = 39912697600.

The previous prime is 149800165777. The next prime is 149800165813. The reversal of 149800165800 is 8561008941.

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, 602899 + ... + 814301.

It is an arithmetic number, because the mean of its divisors is an integer number (4841415855).

Almost surely, 2^149800165800 is an apocalyptic number.

149800165800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149800165800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232387961040).

149800165800 is an abundant number, since it is smaller than the sum of its proper divisors (314975756280).

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

149800165800 is a wasteful number, since it uses less digits than its factorization.

149800165800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212603 (or 212594 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 149800165800 in words is "one hundred forty-nine billion, eight hundred million, one hundred sixty-five thousand, eight hundred".