195278279040 has 768 divisors, whose sum is σ = 790937784000. Its totient is φ = 43958992896.

The previous prime is 195278279029. The next prime is 195278279051. The reversal of 195278279040 is 40972872591.

195278279040 is a `hidden beast` number, since 1 + 9 + 527 + 8 + 2 + 79 + 0 + 40 = 666.

195278279040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (195278279029) and next prime (195278279051).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 41256514 + ... + 41261246.

Almost surely, 2^195278279040 is an apocalyptic number.

195278279040 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 195278279040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395468892000).

195278279040 is an abundant number, since it is smaller than the sum of its proper divisors (595659504960).

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

195278279040 is a wasteful number, since it uses less digits than its factorization.

195278279040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4819 (or 4804 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 195278279040 in words is "one hundred ninety-five billion, two hundred seventy-eight million, two hundred seventy-nine thousand, forty".