195487735440 has 80 divisors (see below), whose sum is σ = 618905887488. Its totient is φ = 51020909568.

The previous prime is 195487735321. The next prime is 195487735441. The reversal of 195487735440 is 44537784591.

195487735440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (195487735441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8653957 + ... + 8676516.

Almost surely, 2^195487735440 is an apocalyptic number.

195487735440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195487735440 is an abundant number, since it is smaller than the sum of its proper divisors (423418152048).

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

195487735440 is a wasteful number, since it uses less digits than its factorization.

195487735440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17330536 (or 17330530 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 195487735440 in words is "one hundred ninety-five billion, four hundred eighty-seven million, seven hundred thirty-five thousand, four hundred forty".