20452523800 has 48 divisors (see below), whose sum is σ = 47670888600. Its totient is φ = 8160576000.

The previous prime is 20452523779. The next prime is 20452523809. The reversal of 20452523800 is 832525402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452523809) 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, 47310 + ... + 207709.

Almost surely, 2^20452523800 is an apocalyptic number.

20452523800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20452523800 is an abundant number, since it is smaller than the sum of its proper divisors (27218364800).

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

20452523800 is a wasteful number, since it uses less digits than its factorization.

20452523800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255436 (or 255427 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 20452523800 in words is "twenty billion, four hundred fifty-two million, five hundred twenty-three thousand, eight hundred".