20003870503537 has 8 divisors (see below), whose sum is σ = 20813275673640. Its totient is φ = 19202439768960.

The previous prime is 20003870503489. The next prime is 20003870503571. The reversal of 20003870503537 is 73530507830002.

It can be written as a sum of positive squares in 4 ways, for example, as 11680235828496 + 8323634675041 = 3417636^2 + 2885071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003870503537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20003870503493 and 20003870503502.

It is not an unprimeable number, because it can be changed into a prime (20003870503637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993603764 + ... + 1993613797.

It is an arithmetic number, because the mean of its divisors is an integer number (2601659459205).

Almost surely, 2^{20003870503537} is an apocalyptic number.

It is an amenable number.

20003870503537 is a deficient number, since it is larger than the sum of its proper divisors (809405170103).

20003870503537 is a wasteful number, since it uses less digits than its factorization.

20003870503537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987217763.

The product of its (nonzero) digits is 529200, while the sum is 43.

The spelling of 20003870503537 in words is "twenty trillion, three billion, eight hundred seventy million, five hundred three thousand, five hundred thirty-seven".