195427018477 has 2 divisors, whose sum is σ = 195427018478. Its totient is φ = 195427018476.

The previous prime is 195427018471. The next prime is 195427018483. The reversal of 195427018477 is 774810724591.

It is a balanced prime because it is at equal distance from previous prime (195427018471) and next prime (195427018483).

It can be written as a sum of positive squares in only one way, i.e., 174685546116 + 20741472361 = 417954^2 + 144019^2 .

It is a cyclic number.

It is not a de Polignac number, because 195427018477 - 2¹¹ = 195427016429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195427018471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97713509238 + 97713509239.

It is an arithmetic number, because the mean of its divisors is an integer number (97713509239).

Almost surely, 2^195427018477 is an apocalyptic number.

It is an amenable number.

195427018477 is a deficient number, since it is larger than the sum of its proper divisors (1).

195427018477 is an equidigital number, since it uses as much as digits as its factorization.

195427018477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 195427018477 in words is "one hundred ninety-five billion, four hundred twenty-seven million, eighteen thousand, four hundred seventy-seven".