20153322788 has 12 divisors (see below), whose sum is σ = 35362870620. Its totient is φ = 10049645472.

The previous prime is 20153322773. The next prime is 20153322817. The reversal of 20153322788 is 88722335102.

It can be written as a sum of positive squares in 2 ways, for example, as 5911764544 + 14241558244 = 76888^2 + 119338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6752303 + ... + 6755286.

It is an arithmetic number, because the mean of its divisors is an integer number (2946905885).

Almost surely, 2^20153322788 is an apocalyptic number.

It is an amenable number.

20153322788 is a deficient number, since it is larger than the sum of its proper divisors (15209547832).

20153322788 is a wasteful number, since it uses less digits than its factorization.

20153322788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13507966 (or 13507964 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 20153322788 in words is "twenty billion, one hundred fifty-three million, three hundred twenty-two thousand, seven hundred eighty-eight".