2661422815 has 16 divisors (see below), whose sum is σ = 3363141600. Its totient is φ = 2016271872.

The previous prime is 2661422747. The next prime is 2661422833. The reversal of 2661422815 is 5182241662.

It is a cyclic number.

It is not a de Polignac number, because 2661422815 - 2⁹ = 2661422303 is a prime.

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, 354339 + ... + 361771.

It is an arithmetic number, because the mean of its divisors is an integer number (210196350).

Almost surely, 2^2661422815 is an apocalyptic number.

2661422815 is a deficient number, since it is larger than the sum of its proper divisors (701718785).

2661422815 is a wasteful number, since it uses less digits than its factorization.

2661422815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226.

The product of its digits is 46080, while the sum is 37.

The square root of 2661422815 is about 51588.9795886680. The cubic root of 2661422815 is about 1385.8129813174.

The spelling of 2661422815 in words is "two billion, six hundred sixty-one million, four hundred twenty-two thousand, eight hundred fifteen".