20373144356 has 6 divisors (see below), whose sum is σ = 35653002630. Its totient is φ = 10186572176.

The previous prime is 20373144317. The next prime is 20373144359. The reversal of 20373144356 is 65344137302.

It can be written as a sum of positive squares in only one way, i.e., 15637502500 + 4735641856 = 125050^2 + 68816^2 .

It is not an unprimeable number, because it can be changed into a prime (20373144359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2546643041 + ... + 2546643048.

It is an arithmetic number, because the mean of its divisors is an integer number (5942167105).

Almost surely, 2^20373144356 is an apocalyptic number.

It is an amenable number.

20373144356 is a deficient number, since it is larger than the sum of its proper divisors (15279858274).

20373144356 is a wasteful number, since it uses less digits than its factorization.

20373144356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5093286093 (or 5093286091 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 20373144356 in words is "twenty billion, three hundred seventy-three million, one hundred forty-four thousand, three hundred fifty-six".