2561124166 has 8 divisors (see below), whose sum is σ = 3841957584. Its totient is φ = 1280471640.

The previous prime is 2561124113. The next prime is 2561124211. The reversal of 2561124166 is 6614211652.

2561124166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290 + ... + 71581.

It is an arithmetic number, because the mean of its divisors is an integer number (480244698).

Almost surely, 2^2561124166 is an apocalyptic number.

2561124166 is a deficient number, since it is larger than the sum of its proper divisors (1280833418).

2561124166 is a wasteful number, since it uses less digits than its factorization.

2561124166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90446.

The product of its digits is 17280, while the sum is 34.

The square root of 2561124166 is about 50607.5504840928. The cubic root of 2561124166 is about 1368.1809672904.

The spelling of 2561124166 in words is "two billion, five hundred sixty-one million, one hundred twenty-four thousand, one hundred sixty-six".