6651201127668 has 48 divisors (see below), whose sum is σ = 15919390843776. Its totient is φ = 2160080957440.

The previous prime is 6651201127633. The next prime is 6651201127691. The reversal of 6651201127668 is 8667211021566.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6651201127668.

It is a congruent number.

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, 8731821 + ... + 9462932.

It is an arithmetic number, because the mean of its divisors is an integer number (331653975912).

Almost surely, 2^{6651201127668} is an apocalyptic number.

It is an amenable number.

6651201127668 is an abundant number, since it is smaller than the sum of its proper divisors (9268189716108).

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

6651201127668 is a wasteful number, since it uses less digits than its factorization.

6651201127668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18195544 (or 18195542 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 6651201127668 in words is "six trillion, six hundred fifty-one billion, two hundred one million, one hundred twenty-seven thousand, six hundred sixty-eight".