20996389535 has 8 divisors (see below), whose sum is σ = 27486182736. Its totient is φ = 15270101440.

The previous prime is 20996389481. The next prime is 20996389577. The reversal of 20996389535 is 53598369902.

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

It is not a de Polignac number, because 20996389535 - 2⁶ = 20996389471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190876214 + ... + 190876323.

It is an arithmetic number, because the mean of its divisors is an integer number (3435772842).

Almost surely, 2^20996389535 is an apocalyptic number.

20996389535 is a deficient number, since it is larger than the sum of its proper divisors (6489793201).

20996389535 is a wasteful number, since it uses less digits than its factorization.

20996389535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381752553.

The product of its (nonzero) digits is 15746400, while the sum is 59.

The spelling of 20996389535 in words is "twenty billion, nine hundred ninety-six million, three hundred eighty-nine thousand, five hundred thirty-five".