771064546513 has 2 divisors, whose sum is σ = 771064546514. Its totient is φ = 771064546512.

The previous prime is 771064546501. The next prime is 771064546537. The reversal of 771064546513 is 315645460177.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 670250041344 + 100814505169 = 818688^2 + 317513^2 .

It is a cyclic number.

It is not a de Polignac number, because 771064546513 - 2⁵ = 771064546481 is a prime.

It is not a weakly prime, because it can be changed into another prime (771064546613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385532273256 + 385532273257.

It is an arithmetic number, because the mean of its divisors is an integer number (385532273257).

Almost surely, 2^771064546513 is an apocalyptic number.

It is an amenable number.

771064546513 is a deficient number, since it is larger than the sum of its proper divisors (1).

771064546513 is an equidigital number, since it uses as much as digits as its factorization.

771064546513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 771064546513 in words is "seven hundred seventy-one billion, sixty-four million, five hundred forty-six thousand, five hundred thirteen".