2561026446 has 24 divisors (see below), whose sum is σ = 6053335704. Its totient is φ = 776068560.

The previous prime is 2561026441. The next prime is 2561026451. The reversal of 2561026446 is 6446201652.

2561026446 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 0 + 2 + 644 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (2561026441) and next prime (2561026451).

It is a super-2 number, since 2×2561026446² = 13117712914222781832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2561026446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561026441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6467041 + ... + 6467436.

It is an arithmetic number, because the mean of its divisors is an integer number (252222321).

Almost surely, 2^2561026446 is an apocalyptic number.

2561026446 is an abundant number, since it is smaller than the sum of its proper divisors (3492309258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561026446 is a wasteful number, since it uses less digits than its factorization.

2561026446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12934496 (or 12934493 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2561026446 is about 50606.5850063013. The cubic root of 2561026446 is about 1368.1635660328.

The spelling of 2561026446 in words is "two billion, five hundred sixty-one million, twenty-six thousand, four hundred forty-six".