2661559910 has 16 divisors (see below), whose sum is σ = 4793457312. Its totient is φ = 1064035200.

The previous prime is 2661559909. The next prime is 2661559937. The reversal of 2661559910 is 199551662.

2661559910 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 54371 + ... + 90990.

It is an arithmetic number, because the mean of its divisors is an integer number (299591082).

Almost surely, 2^2661559910 is an apocalyptic number.

2661559910 is a deficient number, since it is larger than the sum of its proper divisors (2131897402).

2661559910 is a wasteful number, since it uses less digits than its factorization.

2661559910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147199.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 2661559910 is about 51590.3082952603. The cubic root of 2661559910 is about 1385.8367762048.

The spelling of 2661559910 in words is "two billion, six hundred sixty-one million, five hundred fifty-nine thousand, nine hundred ten".