2665541047 has 8 divisors (see below), whose sum is σ = 2995390944. Its totient is φ = 2353520928.

The previous prime is 2665541041. The next prime is 2665541051. The reversal of 2665541047 is 7401455662.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2665541047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665541041) 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, 4457128 + ... + 4457725.

It is an arithmetic number, because the mean of its divisors is an integer number (374423868).

Almost surely, 2^2665541047 is an apocalyptic number.

2665541047 is a deficient number, since it is larger than the sum of its proper divisors (329849897).

2665541047 is a wasteful number, since it uses less digits than its factorization.

2665541047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8914889.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2665541047 is about 51628.8780335192. The cubic root of 2665541047 is about 1386.5274059700.

The spelling of 2665541047 in words is "two billion, six hundred sixty-five million, five hundred forty-one thousand, forty-seven".