11020520533 has 16 divisors (see below), whose sum is σ = 12173436864. Its totient is φ = 9893378560.

The previous prime is 11020520513. The next prime is 11020520561. The reversal of 11020520533 is 33502502011.

It is a cyclic number.

It is not a de Polignac number, because 11020520533 - 2⁵ = 11020520501 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 (11020520513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358341 + ... + 387877.

It is an arithmetic number, because the mean of its divisors is an integer number (760839804).

Almost surely, 2^11020520533 is an apocalyptic number.

It is an amenable number.

11020520533 is a deficient number, since it is larger than the sum of its proper divisors (1152916331).

11020520533 is a wasteful number, since it uses less digits than its factorization.

11020520533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29972.

The product of its (nonzero) digits is 900, while the sum is 22.

The spelling of 11020520533 in words is "eleven billion, twenty million, five hundred twenty thousand, five hundred thirty-three".