6477148144477 has 8 divisors (see below), whose sum is σ = 6861704827896. Its totient is φ = 6092985679872.

The previous prime is 6477148144469. The next prime is 6477148144561. The reversal of 6477148144477 is 7744418417746.

It can be written as a sum of positive squares in 4 ways, for example, as 781197893316 + 5695950251161 = 883854^2 + 2386619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6477148144477 - 2³ = 6477148144469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6477148144417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98520868 + ... + 98586589.

It is an arithmetic number, because the mean of its divisors is an integer number (857713103487).

Almost surely, 2^{6477148144477} is an apocalyptic number.

It is an amenable number.

6477148144477 is a deficient number, since it is larger than the sum of its proper divisors (384556683419).

6477148144477 is a wasteful number, since it uses less digits than its factorization.

6477148144477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197109407.

The product of its digits is 118013952, while the sum is 64.

The spelling of 6477148144477 in words is "six trillion, four hundred seventy-seven billion, one hundred forty-eight million, one hundred forty-four thousand, four hundred seventy-seven".