2661210145 has 16 divisors (see below), whose sum is σ = 3498995520. Its totient is φ = 1926964800.

The previous prime is 2661210137. The next prime is 2661210191. The reversal of 2661210145 is 5410121662.

2661210145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2661210145 - 2³ = 2661210137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93051 + ... + 118240.

It is an arithmetic number, because the mean of its divisors is an integer number (218687220).

Almost surely, 2^2661210145 is an apocalyptic number.

It is an amenable number.

2661210145 is a deficient number, since it is larger than the sum of its proper divisors (837785375).

2661210145 is a wasteful number, since it uses less digits than its factorization.

2661210145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211536.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2661210145 is about 51586.9183514581. The cubic root of 2661210145 is about 1385.7760676415.

The spelling of 2661210145 in words is "two billion, six hundred sixty-one million, two hundred ten thousand, one hundred forty-five".