787051660489 has 2 divisors, whose sum is σ = 787051660490. Its totient is φ = 787051660488.

The previous prime is 787051660487. The next prime is 787051660547. The reversal of 787051660489 is 984066150787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 755752035600 + 31299624889 = 869340^2 + 176917^2 .

It is a cyclic number.

It is not a de Polignac number, because 787051660489 - 2¹ = 787051660487 is a prime.

Together with 787051660487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (787051660481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393525830244 + 393525830245.

It is an arithmetic number, because the mean of its divisors is an integer number (393525830245).

Almost surely, 2^787051660489 is an apocalyptic number.

It is an amenable number.

787051660489 is a deficient number, since it is larger than the sum of its proper divisors (1).

787051660489 is an equidigital number, since it uses as much as digits as its factorization.

787051660489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 787051660489 in words is "seven hundred eighty-seven billion, fifty-one million, six hundred sixty thousand, four hundred eighty-nine".