6541630141656 has 64 divisors (see below), whose sum is σ = 16435676764800. Its totient is φ = 2169674373888.

The previous prime is 6541630141639. The next prime is 6541630141703. The reversal of 6541630141656 is 6561410361456.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9038460 + ... + 9735348.

It is an arithmetic number, because the mean of its divisors is an integer number (256807449450).

Almost surely, 2^{6541630141656} is an apocalyptic number.

It is an amenable number.

6541630141656 is an abundant number, since it is smaller than the sum of its proper divisors (9894046623144).

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

6541630141656 is a wasteful number, since it uses less digits than its factorization.

6541630141656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698848 (or 698844 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 6541630141656 in words is "six trillion, five hundred forty-one billion, six hundred thirty million, one hundred forty-one thousand, six hundred fifty-six".