8465378477 has 2 divisors, whose sum is σ = 8465378478. Its totient is φ = 8465378476.

The previous prime is 8465378473. The next prime is 8465378483. The reversal of 8465378477 is 7748735648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4930005796 + 3535372681 = 70214^2 + 59459^2 .

It is a cyclic number.

It is not a de Polignac number, because 8465378477 - 2² = 8465378473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8465378473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4232689238 + 4232689239.

It is an arithmetic number, because the mean of its divisors is an integer number (4232689239).

Almost surely, 2^8465378477 is an apocalyptic number.

It is an amenable number.

8465378477 is a deficient number, since it is larger than the sum of its proper divisors (1).

8465378477 is an equidigital number, since it uses as much as digits as its factorization.

8465378477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31610880, while the sum is 59.

The square root of 8465378477 is about 92007.4914178188. The cubic root of 8465378477 is about 2038.0529350155.

The spelling of 8465378477 in words is "eight billion, four hundred sixty-five million, three hundred seventy-eight thousand, four hundred seventy-seven".