920891851255 has 16 divisors (see below), whose sum is σ = 1121641058304. Its totient is φ = 725741154720.

The previous prime is 920891851163. The next prime is 920891851259. The reversal of 920891851255 is 552158198029.

It is not a de Polignac number, because 920891851255 - 2¹⁹ = 920891326967 is a prime.

It is a super-3 number, since 3×920891851255³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920891851196 and 920891851205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920891851259) 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, 4582629 + ... + 4779358.

It is an arithmetic number, because the mean of its divisors is an integer number (70102566144).

Almost surely, 2^920891851255 is an apocalyptic number.

920891851255 is a deficient number, since it is larger than the sum of its proper divisors (200749207049).

920891851255 is a wasteful number, since it uses less digits than its factorization.

920891851255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362286.

The product of its (nonzero) digits is 2592000, while the sum is 55.

The spelling of 920891851255 in words is "nine hundred twenty billion, eight hundred ninety-one million, eight hundred fifty-one thousand, two hundred fifty-five".