2613145661 has 8 divisors (see below), whose sum is σ = 2987472000. Its totient is φ = 2239074288.

The previous prime is 2613145657. The next prime is 2613145663. The reversal of 2613145661 is 1665413162.

2613145661 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 cyclic number.

It is not a de Polignac number, because 2613145661 - 2² = 2613145657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2613145663) 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, 41246 + ... + 83231.

It is an arithmetic number, because the mean of its divisors is an integer number (373434000).

Almost surely, 2^2613145661 is an apocalyptic number.

It is an amenable number.

2613145661 is a deficient number, since it is larger than the sum of its proper divisors (374326339).

2613145661 is a wasteful number, since it uses less digits than its factorization.

2613145661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127483.

The product of its digits is 25920, while the sum is 35.

The square root of 2613145661 is about 51118.9364228169. The cubic root of 2613145661 is about 1377.3824324481.

The spelling of 2613145661 in words is "two billion, six hundred thirteen million, one hundred forty-five thousand, six hundred sixty-one".