6477293278 has 4 divisors (see below), whose sum is σ = 9715939920. Its totient is φ = 3238646638.

The previous prime is 6477293209. The next prime is 6477293309. The reversal of 6477293278 is 8723927746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8723927746 = 2 ⋅4361963873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1619323318 + ... + 1619323321.

It is an arithmetic number, because the mean of its divisors is an integer number (2428984980).

Almost surely, 2^6477293278 is an apocalyptic number.

6477293278 is a deficient number, since it is larger than the sum of its proper divisors (3238646642).

6477293278 is a wasteful number, since it uses less digits than its factorization.

6477293278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238646641.

The product of its digits is 7112448, while the sum is 55.

The square root of 6477293278 is about 80481.6331717989. The cubic root of 6477293278 is about 1864.0798867243.

The spelling of 6477293278 in words is "six billion, four hundred seventy-seven million, two hundred ninety-three thousand, two hundred seventy-eight".