6551555661476 has 48 divisors (see below), whose sum is σ = 13382509658112. Its totient is φ = 2747943933600.

The previous prime is 6551555661403. The next prime is 6551555661481. The reversal of 6551555661476 is 6741665551556.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32366141 + ... + 32567931.

It is an arithmetic number, because the mean of its divisors is an integer number (278802284544).

Almost surely, 2^{6551555661476} is an apocalyptic number.

It is an amenable number.

6551555661476 is an abundant number, since it is smaller than the sum of its proper divisors (6830953996636).

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

6551555661476 is a wasteful number, since it uses less digits than its factorization.

6551555661476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226520 (or 226518 counting only the distinct ones).

The product of its digits is 113400000, while the sum is 62.

The spelling of 6551555661476 in words is "six trillion, five hundred fifty-one billion, five hundred fifty-five million, six hundred sixty-one thousand, four hundred seventy-six".