6669621476448 has 96 divisors (see below), whose sum is σ = 20549644625664. Its totient is φ = 1854103260672.

The previous prime is 6669621476447. The next prime is 6669621476461. The reversal of 6669621476448 is 8446741269666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669621476447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134097190 + ... + 134146917.

It is an arithmetic number, because the mean of its divisors is an integer number (214058798184).

Almost surely, 2^{6669621476448} is an apocalyptic number.

It is an amenable number.

6669621476448 is an abundant number, since it is smaller than the sum of its proper divisors (13880023149216).

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

6669621476448 is a wasteful number, since it uses less digits than its factorization.

6669621476448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268244164 (or 268244156 counting only the distinct ones).

The product of its digits is 501645312, while the sum is 69.

The spelling of 6669621476448 in words is "six trillion, six hundred sixty-nine billion, six hundred twenty-one million, four hundred seventy-six thousand, four hundred forty-eight".