6477799165807 has 2 divisors, whose sum is σ = 6477799165808. Its totient is φ = 6477799165806.

The previous prime is 6477799165787. The next prime is 6477799165823. The reversal of 6477799165807 is 7085619977746.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6477799165807 is a prime.

It is a super-2 number, since 2×6477799165807² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6477799175807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3238899582903 + 3238899582904.

It is an arithmetic number, because the mean of its divisors is an integer number (3238899582904).

Almost surely, 2^{6477799165807} is an apocalyptic number.

6477799165807 is a deficient number, since it is larger than the sum of its proper divisors (1).

6477799165807 is an equidigital number, since it uses as much as digits as its factorization.

6477799165807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120210560, while the sum is 76.

The spelling of 6477799165807 in words is "six trillion, four hundred seventy-seven billion, seven hundred ninety-nine million, one hundred sixty-five thousand, eight hundred seven".