20313220412400 has 120 divisors (see below), whose sum is σ = 65801140176240. Its totient is φ = 5355995166720.

The previous prime is 20313220412369. The next prime is 20313220412461. The reversal of 20313220412400 is 421402231302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94992547 + ... + 95206146.

It is an arithmetic number, because the mean of its divisors is an integer number (548342834802).

Almost surely, 2^{20313220412400} is an apocalyptic number.

20313220412400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20313220412400 is an abundant number, since it is smaller than the sum of its proper divisors (45487919763840).

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

20313220412400 is a wasteful number, since it uses less digits than its factorization.

20313220412400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190198803 (or 190198792 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20313220412400 its reverse (421402231302), we get a palindrome (20734622643702).

The spelling of 20313220412400 in words is "twenty trillion, three hundred thirteen billion, two hundred twenty million, four hundred twelve thousand, four hundred".