2497159665 has 256 divisors, whose sum is σ = 6317015040. Its totient is φ = 900771840.

The previous prime is 2497159661. The next prime is 2497159669. The reversal of 2497159665 is 5669517942.

2497159665 is a `hidden beast` number, since 2 + 49 + 7 + 1 + 596 + 6 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (2497159661) and next prime (2497159669).

It is not a de Polignac number, because 2497159665 - 2² = 2497159661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2497159661) 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 255 ways as a sum of consecutive naturals, for example, 2296752 + ... + 2297838.

It is an arithmetic number, because the mean of its divisors is an integer number (24675840).

Almost surely, 2^2497159665 is an apocalyptic number.

It is an amenable number.

2497159665 is an abundant number, since it is smaller than the sum of its proper divisors (3819855375).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2497159665 is a wasteful number, since it uses less digits than its factorization.

2497159665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1143 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 2497159665 is about 49971.5885779109. The cubic root of 2497159665 is about 1356.6946231631.

The spelling of 2497159665 in words is "two billion, four hundred ninety-seven million, one hundred fifty-nine thousand, six hundred sixty-five".