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26078560801 = 53492048317
BaseRepresentation
bin11000010010011001…
…110100001000100001
32111022110102011002021
4120102121310020201
5411402102421201
615551430021441
71612152052336
oct302231641041
974273364067
1026078560801
1110072738797
1250797a7881
1325c7b1b987
14139570498d
15a29720ea1
hex612674221

26078560801 has 4 divisors (see below), whose sum is σ = 26570609172. Its totient is φ = 25586512432.

The previous prime is 26078560799. The next prime is 26078560829. The reversal of 26078560801 is 10806587062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10806587062 = 25403293531.

It can be written as a sum of positive squares in 2 ways, for example, as 9292767201 + 16785793600 = 96399^2 + 129560^2 .

It is a cyclic number.

It is not a de Polignac number, because 26078560801 - 21 = 26078560799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26078561801) 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, 246024106 + ... + 246024211.

It is an arithmetic number, because the mean of its divisors is an integer number (6642652293).

Almost surely, 226078560801 is an apocalyptic number.

It is an amenable number.

26078560801 is a deficient number, since it is larger than the sum of its proper divisors (492048371).

26078560801 is an equidigital number, since it uses as much as digits as its factorization.

26078560801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492048370.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 26078560801 in words is "twenty-six billion, seventy-eight million, five hundred sixty thousand, eight hundred one".

Divisors: 1 53 492048317 26078560801