20552056345 has 4 divisors (see below), whose sum is σ = 24662467620. Its totient is φ = 16441645072.

The previous prime is 20552056333. The next prime is 20552056373. The reversal of 20552056345 is 54365025502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6715474704 + 13836581641 = 81948^2 + 117629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20552056345 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2055205630 + ... + 2055205639.

It is an arithmetic number, because the mean of its divisors is an integer number (6165616905).

Almost surely, 2^20552056345 is an apocalyptic number.

It is an amenable number.

20552056345 is a deficient number, since it is larger than the sum of its proper divisors (4110411275).

20552056345 is an equidigital number, since it uses as much as digits as its factorization.

20552056345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110411274.

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 20552056345 in words is "twenty billion, five hundred fifty-two million, fifty-six thousand, three hundred forty-five".