195102478228557 has 8 divisors (see below), whose sum is σ = 260137071504640. Its totient is φ = 130068101885760.

The previous prime is 195102478228519. The next prime is 195102478228561. The reversal of 195102478228557 is 755822874201591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195102478228557 - 2⁷ = 195102478228429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195102478228057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52123069 + ... + 55740642.

It is an arithmetic number, because the mean of its divisors is an integer number (32517133938080).

Almost surely, 2^{195102478228557} is an apocalyptic number.

It is an amenable number.

195102478228557 is a deficient number, since it is larger than the sum of its proper divisors (65034593276083).

195102478228557 is a wasteful number, since it uses less digits than its factorization.

195102478228557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108466643.

The product of its (nonzero) digits is 112896000, while the sum is 66.

The spelling of 195102478228557 in words is "one hundred ninety-five trillion, one hundred two billion, four hundred seventy-eight million, two hundred twenty-eight thousand, five hundred fifty-seven".