1290566845668 has 48 divisors (see below), whose sum is σ = 3188553984000. Its totient is φ = 404871688704.

The previous prime is 1290566845657. The next prime is 1290566845721. The reversal of 1290566845668 is 8665486650921.

It is a junction number, because it is equal to n+sod(n) for n = 1290566845599 and 1290566845608.

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, 8890333 + ... + 9034331.

It is an arithmetic number, because the mean of its divisors is an integer number (66428208000).

Almost surely, 2^{1290566845668} is an apocalyptic number.

It is an amenable number.

1290566845668 is an abundant number, since it is smaller than the sum of its proper divisors (1897987138332).

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

1290566845668 is a wasteful number, since it uses less digits than its factorization.

1290566845668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187956 (or 187954 counting only the distinct ones).

The product of its (nonzero) digits is 149299200, while the sum is 66.

The spelling of 1290566845668 in words is "one trillion, two hundred ninety billion, five hundred sixty-six million, eight hundred forty-five thousand, six hundred sixty-eight".