6405731534736 has 60 divisors (see below), whose sum is σ = 17932073902288. Its totient is φ = 2134657547712.

The previous prime is 6405731534731. The next prime is 6405731534743. The reversal of 6405731534736 is 6374351375046.

It is a happy number.

6405731534736 is a `hidden beast` number, since 6 + 4 + 0 + 5 + 7 + 31 + 534 + 73 + 6 = 666.

It is a super-2 number, since 2×6405731534736² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6405731534731) 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, 5580850 + ... + 6630033.

Almost surely, 2^{6405731534736} is an apocalyptic number.

It is an amenable number.

6405731534736 is an abundant number, since it is smaller than the sum of its proper divisors (11526342367552).

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

6405731534736 is a wasteful number, since it uses less digits than its factorization.

6405731534736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12214540 (or 12214531 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 54.

The spelling of 6405731534736 in words is "six trillion, four hundred five billion, seven hundred thirty-one million, five hundred thirty-four thousand, seven hundred thirty-six".