478787895749 has 2 divisors, whose sum is σ = 478787895750. Its totient is φ = 478787895748.

The previous prime is 478787895683. The next prime is 478787895793. The reversal of 478787895749 is 947598787874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312572682724 + 166215213025 = 559082^2 + 407695^2 .

It is a cyclic number.

It is not a de Polignac number, because 478787895749 - 2¹² = 478787891653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478787895049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239393947874 + 239393947875.

It is an arithmetic number, because the mean of its divisors is an integer number (239393947875).

Almost surely, 2^478787895749 is an apocalyptic number.

It is an amenable number.

478787895749 is a deficient number, since it is larger than the sum of its proper divisors (1).

478787895749 is an equidigital number, since it uses as much as digits as its factorization.

478787895749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7965941760, while the sum is 83.

The spelling of 478787895749 in words is "four hundred seventy-eight billion, seven hundred eighty-seven million, eight hundred ninety-five thousand, seven hundred forty-nine".