20323235152 has 40 divisors (see below), whose sum is σ = 43123168512. Its totient is φ = 9201868800.

The previous prime is 20323235131. The next prime is 20323235201. The reversal of 20323235152 is 25153232302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20323235152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179424 + ... + 269887.

Almost surely, 2^20323235152 is an apocalyptic number.

20323235152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20323235152 is an abundant number, since it is smaller than the sum of its proper divisors (22799933360).

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

20323235152 is a wasteful number, since it uses less digits than its factorization.

20323235152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449587 (or 449581 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 20323235152 its reverse (25153232302), we get a palindrome (45476467454).

The spelling of 20323235152 in words is "twenty billion, three hundred twenty-three million, two hundred thirty-five thousand, one hundred fifty-two".