2122578047668 has 24 divisors (see below), whose sum is σ = 4000282893992. Its totient is φ = 979641696384.

The previous prime is 2122578047663. The next prime is 2122578047669. The reversal of 2122578047668 is 8667408752212.

It can be written as a sum of positive squares in 4 ways, for example, as 303041442064 + 1819536605604 = 550492^2 + 1348902^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122578047663) 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, 9879646 + ... + 10092202.

Almost surely, 2^{2122578047668} is an apocalyptic number.

It is an amenable number.

2122578047668 is a deficient number, since it is larger than the sum of its proper divisors (1877704846324).

2122578047668 is a wasteful number, since it uses less digits than its factorization.

2122578047668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404611 (or 404609 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 2122578047668 in words is "two trillion, one hundred twenty-two billion, five hundred seventy-eight million, forty-seven thousand, six hundred sixty-eight".