20305454000342 has 16 divisors (see below), whose sum is σ = 34809457708032. Its totient is φ = 8702310430440.

The previous prime is 20305454000329. The next prime is 20305454000347. The reversal of 20305454000342 is 24300045450302.

It is a super-2 number, since 2×20305454000342² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20305454000299 and 20305454000308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20305454000347) 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, 2817473 + ... + 6967715.

It is an arithmetic number, because the mean of its divisors is an integer number (2175591106752).

Almost surely, 2^{20305454000342} is an apocalyptic number.

20305454000342 is a deficient number, since it is larger than the sum of its proper divisors (14504003707690).

20305454000342 is a wasteful number, since it uses less digits than its factorization.

20305454000342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499723.

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 20305454000342 its reverse (24300045450302), we get a palindrome (44605499450644).

The spelling of 20305454000342 in words is "twenty trillion, three hundred five billion, four hundred fifty-four million, three hundred forty-two", and thus it is an aban number.