20053145533 has 8 divisors (see below), whose sum is σ = 20791900800. Its totient is φ = 19317541488.

The previous prime is 20053145473. The next prime is 20053145569. The reversal of 20053145533 is 33554135002.

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 20053145533 - 2¹³ = 20053137341 is a prime.

It is a super-4 number, since 4×20053145533⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20053145495 and 20053145504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053149533) 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, 774841 + ... + 800302.

It is an arithmetic number, because the mean of its divisors is an integer number (2598987600).

Almost surely, 2^20053145533 is an apocalyptic number.

It is an amenable number.

20053145533 is a deficient number, since it is larger than the sum of its proper divisors (738755267).

20053145533 is a wasteful number, since it uses less digits than its factorization.

20053145533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575611.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 20053145533 in words is "twenty billion, fifty-three million, one hundred forty-five thousand, five hundred thirty-three".