20533124553 has 8 divisors (see below), whose sum is σ = 27402690048. Its totient is φ = 13676154384.

The previous prime is 20533124531. The next prime is 20533124593. The reversal of 20533124553 is 35542133502.

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

It is not a de Polignac number, because 20533124553 - 2¹² = 20533120457 is a prime.

It is a super-2 number, since 2×20533124553² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20533124593) 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, 3145026 + ... + 3151547.

It is an arithmetic number, because the mean of its divisors is an integer number (3425336256).

Almost surely, 2^20533124553 is an apocalyptic number.

It is an amenable number.

20533124553 is a deficient number, since it is larger than the sum of its proper divisors (6869565495).

20533124553 is a wasteful number, since it uses less digits than its factorization.

20533124553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6297663.

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 20533124553 in words is "twenty billion, five hundred thirty-three million, one hundred twenty-four thousand, five hundred fifty-three".