20533257336 has 32 divisors (see below), whose sum is σ = 52174674000. Its totient is φ = 6732215040.

The previous prime is 20533257331. The next prime is 20533257343. The reversal of 20533257336 is 63375233502.

It is a super-2 number, since 2×20533257336² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20533257294 and 20533257303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533257331) 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, 7011261 + ... + 7014188.

Almost surely, 2^20533257336 is an apocalyptic number.

It is an amenable number.

20533257336 is an abundant number, since it is smaller than the sum of its proper divisors (31641416664).

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

20533257336 is a wasteful number, since it uses less digits than its factorization.

20533257336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14025519 (or 14025515 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 39.

The spelling of 20533257336 in words is "twenty billion, five hundred thirty-three million, two hundred fifty-seven thousand, three hundred thirty-six".