2122655788 has 48 divisors (see below), whose sum is σ = 4102560000. Its totient is φ = 952966080.

The previous prime is 2122655779. The next prime is 2122655789. The reversal of 2122655788 is 8875562212.

It is not an unprimeable number, because it can be changed into a prime (2122655789) 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, 1303831 + ... + 1305457.

It is an arithmetic number, because the mean of its divisors is an integer number (85470000).

Almost surely, 2^2122655788 is an apocalyptic number.

It is an amenable number.

2122655788 is a deficient number, since it is larger than the sum of its proper divisors (1979904212).

2122655788 is a wasteful number, since it uses less digits than its factorization.

2122655788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1988 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 2122655788 is about 46072.2887210957. The cubic root of 2122655788 is about 1285.1678661529.

The spelling of 2122655788 in words is "two billion, one hundred twenty-two million, six hundred fifty-five thousand, seven hundred eighty-eight".