6454745777 has 2 divisors, whose sum is σ = 6454745778. Its totient is φ = 6454745776.

The previous prime is 6454745771. The next prime is 6454745837. The reversal of 6454745777 is 7775474546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3856906816 + 2597838961 = 62104^2 + 50969^2 .

It is a cyclic number.

It is not a de Polignac number, because 6454745777 - 2⁴ = 6454745761 is a prime.

It is not a weakly prime, because it can be changed into another prime (6454745771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3227372888 + 3227372889.

It is an arithmetic number, because the mean of its divisors is an integer number (3227372889).

Almost surely, 2^6454745777 is an apocalyptic number.

It is an amenable number.

6454745777 is a deficient number, since it is larger than the sum of its proper divisors (1).

6454745777 is an equidigital number, since it uses as much as digits as its factorization.

6454745777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23049600, while the sum is 56.

The square root of 6454745777 is about 80341.4325052771. The cubic root of 6454745777 is about 1861.9144139391.

The spelling of 6454745777 in words is "six billion, four hundred fifty-four million, seven hundred forty-five thousand, seven hundred seventy-seven".