6447244774077 has 12 divisors (see below), whose sum is σ = 9633814030620. Its totient is φ = 4149950659008.

The previous prime is 6447244774073. The next prime is 6447244774111. The reversal of 6447244774077 is 7704774427446.

It is a happy number.

6447244774077 is a `hidden beast` number, since 64 + 47 + 24 + 477 + 40 + 7 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3711244278681 + 2736000495396 = 1926459^2 + 1654086^2 .

It is not a de Polignac number, because 6447244774077 - 2² = 6447244774073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6447244774073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12351043368 + ... + 12351043889.

It is an arithmetic number, because the mean of its divisors is an integer number (802817835885).

Almost surely, 2^{6447244774077} is an apocalyptic number.

It is an amenable number.

6447244774077 is a deficient number, since it is larger than the sum of its proper divisors (3186569256543).

6447244774077 is a wasteful number, since it uses less digits than its factorization.

6447244774077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24702087292 (or 24702087289 counting only the distinct ones).

The product of its (nonzero) digits is 206524416, while the sum is 63.

The spelling of 6447244774077 in words is "six trillion, four hundred forty-seven billion, two hundred forty-four million, seven hundred seventy-four thousand, seventy-seven".