20123332400 has 60 divisors (see below), whose sum is σ = 48381421992. Its totient is φ = 8043486720.

The previous prime is 20123332399. The next prime is 20123332483. The reversal of 20123332400 is 423332102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555647 + ... + 590753.

Almost surely, 2^20123332400 is an apocalyptic number.

20123332400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123332400 is an abundant number, since it is smaller than the sum of its proper divisors (28258089592).

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

20123332400 is a wasteful number, since it uses less digits than its factorization.

20123332400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36558 (or 36547 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20123332400 its reverse (423332102), we get a palindrome (20546664502).

The spelling of 20123332400 in words is "twenty billion, one hundred twenty-three million, three hundred thirty-two thousand, four hundred".