2561107403 has 6 divisors (see below), whose sum is σ = 2632198716. Its totient is φ = 2491886952.

The previous prime is 2561107369. The next prime is 2561107427. The reversal of 2561107403 is 3047011652.

It is not a de Polignac number, because 2561107403 - 2¹⁴ = 2561091019 is a prime.

It is a super-2 number, since 2×2561107403² = 13118542259402808818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561107453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 934025 + ... + 936762.

It is an arithmetic number, because the mean of its divisors is an integer number (438699786).

Almost surely, 2^2561107403 is an apocalyptic number.

2561107403 is a deficient number, since it is larger than the sum of its proper divisors (71091313).

2561107403 is an equidigital number, since it uses as much as digits as its factorization.

2561107403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870861 (or 1870824 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2561107403 is about 50607.3848662426. The cubic root of 2561107403 is about 1368.1779822903.

The spelling of 2561107403 in words is "two billion, five hundred sixty-one million, one hundred seven thousand, four hundred three".