20437380873 has 48 divisors (see below), whose sum is σ = 36489398400. Its totient is φ = 10733789952.

The previous prime is 20437380869. The next prime is 20437380883. The reversal of 20437380873 is 37808373402.

20437380873 is a `hidden beast` number, since 204 + 373 + 8 + 0 + 8 + 73 = 666.

It is not a de Polignac number, because 20437380873 - 2² = 20437380869 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20437380883) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137278 + ... + 244376.

It is an arithmetic number, because the mean of its divisors is an integer number (760195800).

Almost surely, 2^20437380873 is an apocalyptic number.

It is an amenable number.

20437380873 is a deficient number, since it is larger than the sum of its proper divisors (16052017527).

20437380873 is a wasteful number, since it uses less digits than its factorization.

20437380873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107358 (or 107355 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 20437380873 in words is "twenty billion, four hundred thirty-seven million, three hundred eighty thousand, eight hundred seventy-three".