2561470366 has 32 divisors (see below), whose sum is σ = 4766146560. Its totient is φ = 1005340896.

The previous prime is 2561470349. The next prime is 2561470381. The reversal of 2561470366 is 6630741652.

It is a super-2 number, since 2×2561470366² = 13122260871792347912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32296 + ... + 78523.

It is an arithmetic number, because the mean of its divisors is an integer number (148942080).

Almost surely, 2^2561470366 is an apocalyptic number.

2561470366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2561470366 is a deficient number, since it is larger than the sum of its proper divisors (2204676194).

2561470366 is a wasteful number, since it uses less digits than its factorization.

2561470366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110968.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 2561470366 is about 50610.9708067332. The cubic root of 2561470366 is about 1368.2426124742.

The spelling of 2561470366 in words is "two billion, five hundred sixty-one million, four hundred seventy thousand, three hundred sixty-six".