20564053055363 has 16 divisors (see below), whose sum is σ = 21751731240960. Its totient is φ = 19409438721600.

The previous prime is 20564053055333. The next prime is 20564053055369. The reversal of 20564053055363 is 36355035046502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20564053055363 - 2⁸ = 20564053055107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20564053055369) 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, 1756958 + ... + 6649436.

It is an arithmetic number, because the mean of its divisors is an integer number (1359483202560).

Almost surely, 2^{20564053055363} is an apocalyptic number.

20564053055363 is a deficient number, since it is larger than the sum of its proper divisors (1187678185597).

20564053055363 is a wasteful number, since it uses less digits than its factorization.

20564053055363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895858.

The product of its (nonzero) digits is 4860000, while the sum is 47.

The spelling of 20564053055363 in words is "twenty trillion, five hundred sixty-four billion, fifty-three million, fifty-five thousand, three hundred sixty-three".