20533541123 has 8 divisors (see below), whose sum is σ = 20595454320. Its totient is φ = 20471719680.

The previous prime is 20533541101. The next prime is 20533541131. The reversal of 20533541123 is 32114533502.

It is a happy number.

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 20533541123 - 2¹² = 20533537027 is a prime.

It is a super-2 number, since 2×20533541123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20533541143) 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, 439211 + ... + 483707.

It is an arithmetic number, because the mean of its divisors is an integer number (2574431790).

Almost surely, 2^20533541123 is an apocalyptic number.

20533541123 is a deficient number, since it is larger than the sum of its proper divisors (61913197).

20533541123 is an equidigital number, since it uses as much as digits as its factorization.

20533541123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45877.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 20533541123 in words is "twenty billion, five hundred thirty-three million, five hundred forty-one thousand, one hundred twenty-three".