816081601747 has 2 divisors, whose sum is σ = 816081601748. Its totient is φ = 816081601746.

The previous prime is 816081601697. The next prime is 816081601817. The reversal of 816081601747 is 747106180618.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 816081601747 - 2⁷ = 816081601619 is a prime.

It is a super-2 number, since 2×816081601747² (a number of 25 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 816081601747.

It is not a weakly prime, because it can be changed into another prime (816081601847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408040800873 + 408040800874.

It is an arithmetic number, because the mean of its divisors is an integer number (408040800874).

Almost surely, 2^816081601747 is an apocalyptic number.

816081601747 is a deficient number, since it is larger than the sum of its proper divisors (1).

816081601747 is an equidigital number, since it uses as much as digits as its factorization.

816081601747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 816081601747 in words is "eight hundred sixteen billion, eighty-one million, six hundred one thousand, seven hundred forty-seven".