20533413474 has 24 divisors (see below), whose sum is σ = 50844643200. Its totient is φ = 5866689528.

The previous prime is 20533413473. The next prime is 20533413499. The reversal of 20533413474 is 47431433502.

20533413474 is a `hidden beast` number, since 20 + 533 + 4 + 1 + 34 + 74 = 666.

It is not an unprimeable number, because it can be changed into a prime (20533413473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81481674 + ... + 81481925.

It is an arithmetic number, because the mean of its divisors is an integer number (2118526800).

Almost surely, 2^20533413474 is an apocalyptic number.

20533413474 is an abundant number, since it is smaller than the sum of its proper divisors (30311229726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20533413474 is a wasteful number, since it uses less digits than its factorization.

20533413474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162963614 (or 162963611 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

Adding to 20533413474 its reverse (47431433502), we get a palindrome (67964846976).

The spelling of 20533413474 in words is "twenty billion, five hundred thirty-three million, four hundred thirteen thousand, four hundred seventy-four".