20537003518 has 16 divisors (see below), whose sum is σ = 32566032720. Its totient is φ = 9686298816.

The previous prime is 20537003507. The next prime is 20537003533. The reversal of 20537003518 is 81530073502.

It is a congruent number.

It is an unprimeable number.

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, 1150905 + ... + 1168612.

It is an arithmetic number, because the mean of its divisors is an integer number (2035377045).

Almost surely, 2^20537003518 is an apocalyptic number.

20537003518 is a deficient number, since it is larger than the sum of its proper divisors (12029029202).

20537003518 is a wasteful number, since it uses less digits than its factorization.

20537003518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319771.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 20537003518 in words is "twenty billion, five hundred thirty-seven million, three thousand, five hundred eighteen".