6161660645 has 16 divisors (see below), whose sum is σ = 8455704960. Its totient is φ = 4222425024.

The previous prime is 6161660621. The next prime is 6161660669. The reversal of 6161660645 is 5460661616.

6161660645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6161660621) and next prime (6161660669).

It is a cyclic number.

It is not a de Polignac number, because 6161660645 - 2¹⁸ = 6161398501 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 482 + ... + 111011.

It is an arithmetic number, because the mean of its divisors is an integer number (528481560).

Almost surely, 2^6161660645 is an apocalyptic number.

It is an amenable number.

6161660645 is a deficient number, since it is larger than the sum of its proper divisors (2294044315).

6161660645 is a wasteful number, since it uses less digits than its factorization.

6161660645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113084.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 6161660645 is about 78496.2460567383. The cubic root of 6161660645 is about 1833.2960044374.

The spelling of 6161660645 in words is "six billion, one hundred sixty-one million, six hundred sixty thousand, six hundred forty-five".