20535038671 has 16 divisors (see below), whose sum is σ = 24708616960. Its totient is φ = 16671821760.

The previous prime is 20535038669. The next prime is 20535038683. The reversal of 20535038671 is 17683053502.

It is a cyclic number.

It is not a de Polignac number, because 20535038671 - 2¹ = 20535038669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535038071) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 862195 + ... + 885691.

It is an arithmetic number, because the mean of its divisors is an integer number (1544288560).

Almost surely, 2^20535038671 is an apocalyptic number.

20535038671 is a deficient number, since it is larger than the sum of its proper divisors (4173578289).

20535038671 is a wasteful number, since it uses less digits than its factorization.

20535038671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30094.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 20535038671 in words is "twenty billion, five hundred thirty-five million, thirty-eight thousand, six hundred seventy-one".