20430034400000 has 108 divisors (see below), whose sum is σ = 50972069547504. Its totient is φ = 8172013440000.

The previous prime is 20430034399979. The next prime is 20430034400023. The reversal of 20430034400000 is 443003402.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11968772 + ... + 13568771.

Almost surely, 2^{20430034400000} is an apocalyptic number.

20430034400000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20430034400000 is an abundant number, since it is smaller than the sum of its proper divisors (30542035147504).

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

20430034400000 is an frugal number, since it uses more digits than its factorization.

20430034400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25537584 (or 25537550 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20430034400000 its reverse (443003402), we get a palindrome (20430477403402).

The spelling of 20430034400000 in words is "twenty trillion, four hundred thirty billion, thirty-four million, four hundred thousand".