6404950549656 has 96 divisors (see below), whose sum is σ = 17989842124800. Its totient is φ = 2134908848160.

The previous prime is 6404950549637. The next prime is 6404950549693. The reversal of 6404950549656 is 6569450594046.

6404950549656 is a `hidden beast` number, since 6 + 4 + 0 + 4 + 95 + 0 + 5 + 496 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6404950549593 and 6404950549602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102298921 + ... + 102361511.

It is an arithmetic number, because the mean of its divisors is an integer number (187394188800).

Almost surely, 2^{6404950549656} is an apocalyptic number.

It is an amenable number.

6404950549656 is an abundant number, since it is smaller than the sum of its proper divisors (11584891575144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6404950549656 is a wasteful number, since it uses less digits than its factorization.

6404950549656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115251 (or 115235 counting only the distinct ones).

The product of its (nonzero) digits is 139968000, while the sum is 63.

The spelling of 6404950549656 in words is "six trillion, four hundred four billion, nine hundred fifty million, five hundred forty-nine thousand, six hundred fifty-six".