6631491434946 has 32 divisors (see below), whose sum is σ = 15171437058048. Its totient is φ = 1892994044880.

The previous prime is 6631491434899. The next prime is 6631491434951. The reversal of 6631491434946 is 6494341941366.

It is a self number, because there is not a number n which added to its sum of digits gives 6631491434946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71527860 + ... + 71620511.

It is an arithmetic number, because the mean of its divisors is an integer number (474107408064).

Almost surely, 2^{6631491434946} is an apocalyptic number.

6631491434946 is an abundant number, since it is smaller than the sum of its proper divisors (8539945623102).

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

6631491434946 is a wasteful number, since it uses less digits than its factorization.

6631491434946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143149486.

The product of its digits is 40310784, while the sum is 60.

The spelling of 6631491434946 in words is "six trillion, six hundred thirty-one billion, four hundred ninety-one million, four hundred thirty-four thousand, nine hundred forty-six".