6480650857 has 2 divisors, whose sum is σ = 6480650858. Its totient is φ = 6480650856.

The previous prime is 6480650837. The next prime is 6480650861. The reversal of 6480650857 is 7580560846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6424984336 + 55666521 = 80156^2 + 7461^2 .

It is a cyclic number.

It is not a de Polignac number, because 6480650857 - 2²³ = 6472262249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6480650857.

It is not a weakly prime, because it can be changed into another prime (6480650837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240325428 + 3240325429.

It is an arithmetic number, because the mean of its divisors is an integer number (3240325429).

Almost surely, 2^6480650857 is an apocalyptic number.

It is an amenable number.

6480650857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6480650857 is an equidigital number, since it uses as much as digits as its factorization.

6480650857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The square root of 6480650857 is about 80502.4897565286. The cubic root of 6480650857 is about 1864.4019201254.

The spelling of 6480650857 in words is "six billion, four hundred eighty million, six hundred fifty thousand, eight hundred fifty-seven".