2561671022 has 16 divisors (see below), whose sum is σ = 3874590720. Its totient is φ = 1270185432.

The previous prime is 2561671001. The next prime is 2561671037. The reversal of 2561671022 is 2201761652.

It is a self number, because there is not a number n which added to its sum of digits gives 2561671022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106379 + ... + 128217.

It is an arithmetic number, because the mean of its divisors is an integer number (242161920).

Almost surely, 2^2561671022 is an apocalyptic number.

2561671022 is a deficient number, since it is larger than the sum of its proper divisors (1312919698).

2561671022 is a wasteful number, since it uses less digits than its factorization.

2561671022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22327.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2561671022 is about 50612.9531049118. The cubic root of 2561671022 is about 1368.2783392095.

The spelling of 2561671022 in words is "two billion, five hundred sixty-one million, six hundred seventy-one thousand, twenty-two".