6631545327478 has 16 divisors (see below), whose sum is σ = 9952898422320. Its totient is φ = 3313912716576.

The previous prime is 6631545327409. The next prime is 6631545327479. The reversal of 6631545327478 is 8747235451366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631545327479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90049800 + ... + 90123412.

It is an arithmetic number, because the mean of its divisors is an integer number (622056151395).

Almost surely, 2^{6631545327478} is an apocalyptic number.

6631545327478 is a deficient number, since it is larger than the sum of its proper divisors (3321353094842).

6631545327478 is a wasteful number, since it uses less digits than its factorization.

6631545327478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98271.

The product of its digits is 101606400, while the sum is 61.

The spelling of 6631545327478 in words is "six trillion, six hundred thirty-one billion, five hundred forty-five million, three hundred twenty-seven thousand, four hundred seventy-eight".