2561016457301 has 4 divisors (see below), whose sum is σ = 2575820020812. Its totient is φ = 2546212893792.

The previous prime is 2561016457277. The next prime is 2561016457303. The reversal of 2561016457301 is 1037546101652.

It is a happy number.

2561016457301 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1126294012900 + 1434722444401 = 1061270^2 + 1197799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2561016457301 - 2²² = 2561012262997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561016457303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7401781496 + ... + 7401781841.

It is an arithmetic number, because the mean of its divisors is an integer number (643955005203).

Almost surely, 2^{2561016457301} is an apocalyptic number.

It is an amenable number.

2561016457301 is a deficient number, since it is larger than the sum of its proper divisors (14803563511).

2561016457301 is a wasteful number, since it uses less digits than its factorization.

2561016457301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14803563510.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 2561016457301 in words is "two trillion, five hundred sixty-one billion, sixteen million, four hundred fifty-seven thousand, three hundred one".