2542467665 has 16 divisors (see below), whose sum is σ = 3161452800. Its totient is φ = 1961511552.

The previous prime is 2542467661. The next prime is 2542467673. The reversal of 2542467665 is 5667642452.

It is a cyclic number.

It is not a de Polignac number, because 2542467665 - 2² = 2542467661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2542467661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57860 + ... + 91829.

It is an arithmetic number, because the mean of its divisors is an integer number (197590800).

Almost surely, 2^2542467665 is an apocalyptic number.

It is an amenable number.

2542467665 is a deficient number, since it is larger than the sum of its proper divisors (618985135).

2542467665 is a wasteful number, since it uses less digits than its factorization.

2542467665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149816.

The product of its digits is 2419200, while the sum is 47.

The square root of 2542467665 is about 50422.8883048165. Note that the first 3 decimals coincide. The cubic root of 2542467665 is about 1364.8506977098.

The spelling of 2542467665 in words is "two billion, five hundred forty-two million, four hundred sixty-seven thousand, six hundred sixty-five".