195777940000 has 60 divisors (see below), whose sum is σ = 481643148294. Its totient is φ = 78311168000.

The previous prime is 195777939979. The next prime is 195777940013. The reversal of 195777940000 is 49777591.

It can be written as a sum of positive squares in 5 ways, for example, as 14167696 + 195763772304 = 3764^2 + 442452^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4874449 + ... + 4914448.

Almost surely, 2^195777940000 is an apocalyptic number.

195777940000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195777940000 is an abundant number, since it is smaller than the sum of its proper divisors (285865208294).

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

195777940000 is an frugal number, since it uses more digits than its factorization.

195777940000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788927 (or 9788904 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 49.

The spelling of 195777940000 in words is "one hundred ninety-five billion, seven hundred seventy-seven million, nine hundred forty thousand".