20001687037 has 4 divisors (see below), whose sum is σ = 20002335136. Its totient is φ = 20001038940.

The previous prime is 20001687029. The next prime is 20001687067. The reversal of 20001687037 is 73078610002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20001687037 - 2³ = 20001687029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001686993 and 20001687011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001687067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275313 + ... + 340294.

It is an arithmetic number, because the mean of its divisors is an integer number (5000583784).

Almost surely, 2^20001687037 is an apocalyptic number.

It is an amenable number.

20001687037 is a deficient number, since it is larger than the sum of its proper divisors (648099).

20001687037 is an equidigital number, since it uses as much as digits as its factorization.

20001687037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648098.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 20001687037 in words is "twenty billion, one million, six hundred eighty-seven thousand, thirty-seven".