2561572676 has 24 divisors (see below), whose sum is σ = 4899639360. Its totient is φ = 1164616992.

The previous prime is 2561572667. The next prime is 2561572681. The reversal of 2561572676 is 6762751652.

It is a self number, because there is not a number n which added to its sum of digits gives 2561572676.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 364136 + ... + 371103.

It is an arithmetic number, because the mean of its divisors is an integer number (204151640).

Almost surely, 2^2561572676 is an apocalyptic number.

2561572676 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2561572676 is a deficient number, since it is larger than the sum of its proper divisors (2338066684).

2561572676 is a wasteful number, since it uses less digits than its factorization.

2561572676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735323 (or 735321 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 47.

The square root of 2561572676 is about 50611.9815458751. The cubic root of 2561572676 is about 1368.2608289694.

The spelling of 2561572676 in words is "two billion, five hundred sixty-one million, five hundred seventy-two thousand, six hundred seventy-six".