20344353161242 has 16 divisors (see below), whose sum is σ = 33292995884064. Its totient is φ = 9246812098000.

The previous prime is 20344353161239. The next prime is 20344353161243. The reversal of 20344353161242 is 24216135344302.

It is a junction number, because it is equal to n+sod(n) for n = 20344353161195 and 20344353161204.

It is not an unprimeable number, because it can be changed into a prime (20344353161243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30722809 + ... + 31378012.

It is an arithmetic number, because the mean of its divisors is an integer number (2080812242754).

Almost surely, 2^{20344353161242} is an apocalyptic number.

20344353161242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20344353161242 is a deficient number, since it is larger than the sum of its proper divisors (12948642722822).

20344353161242 is a wasteful number, since it uses less digits than its factorization.

20344353161242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62115725.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 20344353161242 in words is "twenty trillion, three hundred forty-four billion, three hundred fifty-three million, one hundred sixty-one thousand, two hundred forty-two".