20346355065455 has 16 divisors (see below), whose sum is σ = 25851968981280. Its totient is φ = 15319531717632.

The previous prime is 20346355065451. The next prime is 20346355065473. The reversal of 20346355065455 is 55456055364302.

It is a cyclic number.

It is not a de Polignac number, because 20346355065455 - 2² = 20346355065451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20346355065397 and 20346355065406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346355065451) 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, 21003011 + ... + 21950379.

It is an arithmetic number, because the mean of its divisors is an integer number (1615748061330).

Almost surely, 2^{20346355065455} is an apocalyptic number.

20346355065455 is a deficient number, since it is larger than the sum of its proper divisors (5505613915825).

20346355065455 is a wasteful number, since it uses less digits than its factorization.

20346355065455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200058.

The product of its (nonzero) digits is 32400000, while the sum is 53.

The spelling of 20346355065455 in words is "twenty trillion, three hundred forty-six billion, three hundred fifty-five million, sixty-five thousand, four hundred fifty-five".