20400224024000 has 56 divisors (see below), whose sum is σ = 50521154815248. Its totient is φ = 8160089606400.

The previous prime is 20400224023981. The next prime is 20400224024107. The reversal of 20400224024000 is 42042200402.

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

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, 1275006002 + ... + 1275022001.

Almost surely, 2^{20400224024000} is an apocalyptic number.

20400224024000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20400224024000 is an abundant number, since it is smaller than the sum of its proper divisors (30120930791248).

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

20400224024000 is an equidigital number, since it uses as much as digits as its factorization.

20400224024000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550028030 (or 2550028010 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20400224024000 its reverse (42042200402), we get a palindrome (20442266224402).

The spelling of 20400224024000 in words is "twenty trillion, four hundred billion, two hundred twenty-four million, twenty-four thousand".