417021327557 has 2 divisors, whose sum is σ = 417021327558. Its totient is φ = 417021327556.

The previous prime is 417021327521. The next prime is 417021327571. The reversal of 417021327557 is 755723120714.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411196432516 + 5824895041 = 641246^2 + 76321^2 .

It is a cyclic number.

It is not a de Polignac number, because 417021327557 - 2¹² = 417021323461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (417021321557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208510663778 + 208510663779.

It is an arithmetic number, because the mean of its divisors is an integer number (208510663779).

Almost surely, 2^417021327557 is an apocalyptic number.

It is an amenable number.

417021327557 is a deficient number, since it is larger than the sum of its proper divisors (1).

417021327557 is an equidigital number, since it uses as much as digits as its factorization.

417021327557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 417021327557 in words is "four hundred seventeen billion, twenty-one million, three hundred twenty-seven thousand, five hundred fifty-seven".