495406406461 has 2 divisors, whose sum is σ = 495406406462. Its totient is φ = 495406406460.

The previous prime is 495406406431. The next prime is 495406406611. The reversal of 495406406461 is 164604604594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295141206361 + 200265200100 = 543269^2 + 447510^2 .

It is a cyclic number.

It is not a de Polignac number, because 495406406461 - 2¹³ = 495406398269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495406406401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247703203230 + 247703203231.

It is an arithmetic number, because the mean of its divisors is an integer number (247703203231).

Almost surely, 2^495406406461 is an apocalyptic number.

It is an amenable number.

495406406461 is a deficient number, since it is larger than the sum of its proper divisors (1).

495406406461 is an equidigital number, since it uses as much as digits as its factorization.

495406406461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 495406406461 in words is "four hundred ninety-five billion, four hundred six million, four hundred six thousand, four hundred sixty-one".