816617000477 has 8 divisors (see below), whose sum is σ = 845011432440. Its totient is φ = 788238250240.

The previous prime is 816617000473. The next prime is 816617000501. The reversal of 816617000477 is 774000716618.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 149603409796 + 667013590681 = 386786^2 + 816709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 816617000477 - 2² = 816617000473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816617000473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3814424 + ... + 4022817.

It is an arithmetic number, because the mean of its divisors is an integer number (105626429055).

Almost surely, 2^816617000477 is an apocalyptic number.

It is an amenable number.

816617000477 is a deficient number, since it is larger than the sum of its proper divisors (28394431963).

816617000477 is a wasteful number, since it uses less digits than its factorization.

816617000477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7840863.

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 816617000477 in words is "eight hundred sixteen billion, six hundred seventeen million, four hundred seventy-seven", and thus it is an aban number.