20533422152 has 8 divisors (see below), whose sum is σ = 38500166550. Its totient is φ = 10266711072.

The previous prime is 20533422121. The next prime is 20533422157. The reversal of 20533422152 is 25122433502.

It can be written as a sum of positive squares in only one way, i.e., 20233924516 + 299497636 = 142246^2 + 17306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20533422152² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20533422157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283338877 + ... + 1283338892.

Almost surely, 2^20533422152 is an apocalyptic number.

It is an amenable number.

20533422152 is a deficient number, since it is larger than the sum of its proper divisors (17966744398).

20533422152 is a wasteful number, since it uses less digits than its factorization.

20533422152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566677775 (or 2566677771 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20533422152 its reverse (25122433502), we get a palindrome (45655855654).

The spelling of 20533422152 in words is "twenty billion, five hundred thirty-three million, four hundred twenty-two thousand, one hundred fifty-two".