487711831735657 has 2 divisors, whose sum is σ = 487711831735658. Its totient is φ = 487711831735656.

The previous prime is 487711831735577. The next prime is 487711831735769. The reversal of 487711831735657 is 756537138117784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449503559847001 + 38208271888656 = 21201499^2 + 6181284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487711831735657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487711831735657.

It is not a weakly prime, because it can be changed into another prime (487711831735157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243855915867828 + 243855915867829.

It is an arithmetic number, because the mean of its divisors is an integer number (243855915867829).

Almost surely, 2^{487711831735657} is an apocalyptic number.

It is an amenable number.

487711831735657 is a deficient number, since it is larger than the sum of its proper divisors (1).

487711831735657 is an equidigital number, since it uses as much as digits as its factorization.

487711831735657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829785600, while the sum is 73.

The spelling of 487711831735657 in words is "four hundred eighty-seven trillion, seven hundred eleven billion, eight hundred thirty-one million, seven hundred thirty-five thousand, six hundred fifty-seven".