20346305620443 has 16 divisors (see below), whose sum is σ = 29633110953600. Its totient is φ = 12315059066880.

The previous prime is 20346305620427. The next prime is 20346305620483. The reversal of 20346305620443 is 34402650364302.

It is not a de Polignac number, because 20346305620443 - 2⁴ = 20346305620427 is a prime.

It is a super-2 number, since 2×20346305620443² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20346305620395 and 20346305620404.

It is not an unprimeable number, because it can be changed into a prime (20346305620423) 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, 400855453 + ... + 400906206.

It is an arithmetic number, because the mean of its divisors is an integer number (1852069434600).

Almost surely, 2^{20346305620443} is an apocalyptic number.

20346305620443 is a deficient number, since it is larger than the sum of its proper divisors (9286805333157).

20346305620443 is a wasteful number, since it uses less digits than its factorization.

20346305620443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801762442.

The product of its (nonzero) digits is 1244160, while the sum is 42.

Adding to 20346305620443 its reverse (34402650364302), we get a palindrome (54748955984745).

The spelling of 20346305620443 in words is "twenty trillion, three hundred forty-six billion, three hundred five million, six hundred twenty thousand, four hundred forty-three".