780110345857 has 2 divisors, whose sum is σ = 780110345858. Its totient is φ = 780110345856.

The previous prime is 780110345771. The next prime is 780110345947. The reversal of 780110345857 is 758543011087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549687305281 + 230423040576 = 741409^2 + 480024^2 .

It is a cyclic number.

It is not a de Polignac number, because 780110345857 - 2²³ = 780101957249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 780110345857.

It is not a weakly prime, because it can be changed into another prime (780110340857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390055172928 + 390055172929.

It is an arithmetic number, because the mean of its divisors is an integer number (390055172929).

Almost surely, 2^780110345857 is an apocalyptic number.

It is an amenable number.

780110345857 is a deficient number, since it is larger than the sum of its proper divisors (1).

780110345857 is an equidigital number, since it uses as much as digits as its factorization.

780110345857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 780110345857 in words is "seven hundred eighty billion, one hundred ten million, three hundred forty-five thousand, eight hundred fifty-seven".