20935017418 has 24 divisors (see below), whose sum is σ = 37876898592. Its totient is φ = 8499929832.

The previous prime is 20935017413. The next prime is 20935017419. The reversal of 20935017418 is 81471053902.

It is not an unprimeable number, because it can be changed into a prime (20935017413) 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 11 ways as a sum of consecutive naturals, for example, 2066080 + ... + 2076187.

It is an arithmetic number, because the mean of its divisors is an integer number (1578204108).

Almost surely, 2^20935017418 is an apocalyptic number.

20935017418 is a deficient number, since it is larger than the sum of its proper divisors (16941881174).

20935017418 is a wasteful number, since it uses less digits than its factorization.

20935017418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4142314 (or 4142295 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 20935017418 in words is "twenty billion, nine hundred thirty-five million, seventeen thousand, four hundred eighteen".