6390478711 has 2 divisors, whose sum is σ = 6390478712. Its totient is φ = 6390478710.

The previous prime is 6390478697. The next prime is 6390478729. The reversal of 6390478711 is 1178740936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6390478711 - 2³¹ = 4242995063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6390478781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3195239355 + 3195239356.

It is an arithmetic number, because the mean of its divisors is an integer number (3195239356).

Almost surely, 2^6390478711 is an apocalyptic number.

6390478711 is a deficient number, since it is larger than the sum of its proper divisors (1).

6390478711 is an equidigital number, since it uses as much as digits as its factorization.

6390478711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 6390478711 is about 79940.4697947166. The cubic root of 6390478711 is about 1855.7143700573.

The spelling of 6390478711 in words is "six billion, three hundred ninety million, four hundred seventy-eight thousand, seven hundred eleven".