195490177050 has 144 divisors (see below), whose sum is σ = 569785406400. Its totient is φ = 44222653440.

The previous prime is 195490177021. The next prime is 195490177073. The reversal of 195490177050 is 50771094591.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 575851 + ... + 850049.

It is an arithmetic number, because the mean of its divisors is an integer number (3956843100).

Almost surely, 2^195490177050 is an apocalyptic number.

195490177050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195490177050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284892703200).

195490177050 is an abundant number, since it is smaller than the sum of its proper divisors (374295229350).

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

195490177050 is a wasteful number, since it uses less digits than its factorization.

195490177050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274325 (or 274313 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 48.

The spelling of 195490177050 in words is "one hundred ninety-five billion, four hundred ninety million, one hundred seventy-seven thousand, fifty".