20400410312 has 64 divisors (see below), whose sum is σ = 42431869440. Its totient is φ = 9151718400.

The previous prime is 20400410309. The next prime is 20400410339. The reversal of 20400410312 is 21301400402.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246362 + ... + 318582.

It is an arithmetic number, because the mean of its divisors is an integer number (662997960).

Almost surely, 2^20400410312 is an apocalyptic number.

It is an amenable number.

20400410312 is an abundant number, since it is smaller than the sum of its proper divisors (22031459128).

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

20400410312 is a wasteful number, since it uses less digits than its factorization.

20400410312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72342 (or 72338 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20400410312 its reverse (21301400402), we get a palindrome (41701810714).

The spelling of 20400410312 in words is "twenty billion, four hundred million, four hundred ten thousand, three hundred twelve".