20123143388 has 12 divisors (see below), whose sum is σ = 35227406760. Its totient is φ = 10058170032.

The previous prime is 20123143373. The next prime is 20123143441. The reversal of 20123143388 is 88334132102.

It is a congruent number.

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, 837083 + ... + 860786.

It is an arithmetic number, because the mean of its divisors is an integer number (2935617230).

Almost surely, 2^20123143388 is an apocalyptic number.

It is an amenable number.

20123143388 is a deficient number, since it is larger than the sum of its proper divisors (15104263372).

20123143388 is a wasteful number, since it uses less digits than its factorization.

20123143388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700836 (or 1700834 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 20123143388 in words is "twenty billion, one hundred twenty-three million, one hundred forty-three thousand, three hundred eighty-eight".