920055908591 has 16 divisors (see below), whose sum is σ = 991187619840. Its totient is φ = 851202535680.

The previous prime is 920055908587. The next prime is 920055908711. The reversal of 920055908591 is 195809550029.

It is a cyclic number.

It is not a de Polignac number, because 920055908591 - 2² = 920055908587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920055908501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4393631 + ... + 4598271.

It is an arithmetic number, because the mean of its divisors is an integer number (61949226240).

Almost surely, 2^920055908591 is an apocalyptic number.

920055908591 is a deficient number, since it is larger than the sum of its proper divisors (71131711249).

920055908591 is a wasteful number, since it uses less digits than its factorization.

920055908591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210206.

The product of its (nonzero) digits is 1458000, while the sum is 53.

The spelling of 920055908591 in words is "nine hundred twenty billion, fifty-five million, nine hundred eight thousand, five hundred ninety-one".