2561016035 has 4 divisors (see below), whose sum is σ = 3073219248. Its totient is φ = 2048812824.

The previous prime is 2561016011. The next prime is 2561016037. The reversal of 2561016035 is 5306101652.

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

It is a cyclic number.

It is not a de Polignac number, because 2561016035 - 2¹⁸ = 2560753891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2561015989 and 2561016007.

It is not an unprimeable number, because it can be changed into a prime (2561016037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256101599 + ... + 256101608.

It is an arithmetic number, because the mean of its divisors is an integer number (768304812).

Almost surely, 2^2561016035 is an apocalyptic number.

2561016035 is a deficient number, since it is larger than the sum of its proper divisors (512203213).

2561016035 is an equidigital number, since it uses as much as digits as its factorization.

2561016035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512203212.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2561016035 is about 50606.4821440890. The cubic root of 2561016035 is about 1368.1617120925.

Adding to 2561016035 its reverse (5306101652), we get a palindrome (7867117687).

The spelling of 2561016035 in words is "two billion, five hundred sixty-one million, sixteen thousand, thirty-five".