20344316336421 has 16 divisors (see below), whose sum is σ = 33819123260928. Its totient is φ = 10568476018800.

The previous prime is 20344316336419. The next prime is 20344316336437. The reversal of 20344316336421 is 12463361344302.

It is not a de Polignac number, because 20344316336421 - 2¹ = 20344316336419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344316336441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44035316515 + ... + 44035316976.

It is an arithmetic number, because the mean of its divisors is an integer number (2113695203808).

Almost surely, 2^{20344316336421} is an apocalyptic number.

20344316336421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20344316336421 is a deficient number, since it is larger than the sum of its proper divisors (13474806924507).

20344316336421 is a wasteful number, since it uses less digits than its factorization.

20344316336421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88070633512.

The product of its (nonzero) digits is 746496, while the sum is 42.

The spelling of 20344316336421 in words is "twenty trillion, three hundred forty-four billion, three hundred sixteen million, three hundred thirty-six thousand, four hundred twenty-one".