20535433511 has 8 divisors (see below), whose sum is σ = 20889139200. Its totient is φ = 20182278240.

The previous prime is 20535433493. The next prime is 20535433517. The reversal of 20535433511 is 11533453502.

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

It is a cyclic number.

It is not a de Polignac number, because 20535433511 - 2¹⁴ = 20535417127 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 (20535433517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61991 + ... + 211928.

It is an arithmetic number, because the mean of its divisors is an integer number (2611142400).

Almost surely, 2^20535433511 is an apocalyptic number.

20535433511 is a deficient number, since it is larger than the sum of its proper divisors (353705689).

20535433511 is a wasteful number, since it uses less digits than its factorization.

20535433511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275209.

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 20535433511 in words is "twenty billion, five hundred thirty-five million, four hundred thirty-three thousand, five hundred eleven".