476688016817 has 2 divisors, whose sum is σ = 476688016818. Its totient is φ = 476688016816.

The previous prime is 476688016799. The next prime is 476688016823. The reversal of 476688016817 is 718610886674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391526769841 + 85161246976 = 625721^2 + 291824^2 .

It is a cyclic number.

It is not a de Polignac number, because 476688016817 - 2²⁶ = 476620907953 is a prime.

It is a super-2 number, since 2×476688016817² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 476688016817.

It is not a weakly prime, because it can be changed into another prime (476688066817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238344008408 + 238344008409.

It is an arithmetic number, because the mean of its divisors is an integer number (238344008409).

Almost surely, 2^476688016817 is an apocalyptic number.

It is an amenable number.

476688016817 is a deficient number, since it is larger than the sum of its proper divisors (1).

476688016817 is an equidigital number, since it uses as much as digits as its factorization.

476688016817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21676032, while the sum is 62.

The spelling of 476688016817 in words is "four hundred seventy-six billion, six hundred eighty-eight million, sixteen thousand, eight hundred seventeen".