10920800257 has 4 divisors (see below), whose sum is σ = 11174772400. Its totient is φ = 10666828116.

The previous prime is 10920800243. The next prime is 10920800263. The reversal of 10920800257 is 75200802901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10920800257 - 2¹⁹ = 10920275969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10920800227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126986007 + ... + 126986092.

It is an arithmetic number, because the mean of its divisors is an integer number (2793693100).

Almost surely, 2^10920800257 is an apocalyptic number.

It is an amenable number.

10920800257 is a deficient number, since it is larger than the sum of its proper divisors (253972143).

10920800257 is an equidigital number, since it uses as much as digits as its factorization.

10920800257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253972142.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 10920800257 in words is "ten billion, nine hundred twenty million, eight hundred thousand, two hundred fifty-seven".