477845917657 has 2 divisors, whose sum is σ = 477845917658. Its totient is φ = 477845917656.

The previous prime is 477845917631. The next prime is 477845917711. The reversal of 477845917657 is 756719548774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475066941001 + 2778976656 = 689251^2 + 52716^2 .

It is a cyclic number.

It is not a de Polignac number, because 477845917657 - 2¹¹ = 477845915609 is a prime.

It is not a weakly prime, because it can be changed into another prime (477845917057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238922958828 + 238922958829.

It is an arithmetic number, because the mean of its divisors is an integer number (238922958829).

Almost surely, 2^477845917657 is an apocalyptic number.

It is an amenable number.

477845917657 is a deficient number, since it is larger than the sum of its proper divisors (1).

477845917657 is an equidigital number, since it uses as much as digits as its factorization.

477845917657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414892800, while the sum is 70.

The spelling of 477845917657 in words is "four hundred seventy-seven billion, eight hundred forty-five million, nine hundred seventeen thousand, six hundred fifty-seven".