2661581470 has 16 divisors (see below), whose sum is σ = 4817318688. Its totient is φ = 1058749920.

The previous prime is 2661581467. The next prime is 2661581479. The reversal of 2661581470 is 741851662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661581479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733434 + ... + 737053.

It is an arithmetic number, because the mean of its divisors is an integer number (301082418).

Almost surely, 2^2661581470 is an apocalyptic number.

2661581470 is a deficient number, since it is larger than the sum of its proper divisors (2155737218).

2661581470 is a wasteful number, since it uses less digits than its factorization.

2661581470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470675.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 2661581470 is about 51590.5172488123. The cubic root of 2661581470 is about 1385.8405181908.

The spelling of 2661581470 in words is "two billion, six hundred sixty-one million, five hundred eighty-one thousand, four hundred seventy".